A few minutes later, and everyone who was inside the Fairy Tail guild hall piled outside. They formed a large circle around the area in front of the guild, which would serve as an arena of sorts for the upcoming brawl. Nevertheless, they all stayed a fair distance away from the center, as per Y/N's insistence. With that sorted, Natsu and Y/N took their places inside the ring.

Y/N: You ready for this, Natsu? You can still back out, you know.

Although Y/N was reluctant at first, he had to admit, he was a bit excited about this. He hadn't done any real fighting in a long time. After the Plumbers received advanced tech, any low-lives he ended up handling just got sloppier and sloppier with each passing day. It might be fun to have a good, friendly match with someone who knows his way around a fist fight. And besides, he may have been reluctant at first, but Y/N 10 fought to win. No doubt about that.

Natsu: Are you kidding?! This is awesome! I'M ALL FIRED UP!!!

It was then that Makarov stepped up, in between the two combatants, and raised his hand into the air.

Makarov: Let the match... (swipe his hand down) begin!

Makarov quickly retook his spot in the crowd, while the two fighters prepared themselves. Natsu engulfed his hands in flames, never once losing his wide, excited grin. Meanwhile, Y/N activated his Omnitrix. He spent a few seconds scrolling through the playlist, looking for an alien that would be most appropriate to fight Natsu.

Then, he saw it: the perfect icon to match Natsu's hotheaded nature. Surely he'd enjoy fighting this one. Y/N tapped the faceplate and slammed down the core as soon as it popped out. After the resulting green flash, the surrounding wizards gaped at what stood in Y/N's place.

It was a nine-foot-tall, humanoid tiger with no tail. It was extremely buff and bore a large black claw on either hand. Its chest, chin, feet, and hands were all white, while the rest of its fur was orange with black stripes. The Omnitrix dial rested proudly on its chest.

Rath: RATH! LEMME TELL YA SOMETHIN, NATSU DRAGNEEL, SON OF IGNEEL! NOBODY PICKS A FIGHT WITH RATH, WITHOUT GETTIN' THEIR FACE STOMPED IN, AND OUT THEIR BUTT!

In the crowd, Happy was jumping up and down, bursting with excitement at the sight of this cat-like form of Y/N's, immediately thinking it was the coolest thing ever. Lucy, on the other hand, was shocked by the sudden change.

Lucy: (shocked) Whoa! What's wrong with Y/N?! It's like he's a totally different person!

Levy, who was standing next to Lucy and had heard her question, was also curious as to what had caused this shift.

Levy: I dunno. Maybe some of his forms affect his personality somehow?

Happy: Who cares?! It's the most awesomest thing EVER!

Natsu was the only person present who remained unaffected by Y/N's sudden personality flip. In fact, if anything, it only made him even more excited. The Dragon Slayer then leaped forward, his flames intensifying as he did so.

Natsu: Fire Dragon Iron Fist!

Natsu reared back his flaming fist and slammed it into the side of Rath's face. Upon contact, Natsu's attack erupted into a conflagration of fire and smoke, making it impossible for anyone, himself included, to see the result. The fire-breather landed on the ground and leaped back and out of the smoke, waiting for it to clear so he could see his handiwork.

After a few moments, the smoke cleared, and everyone was shocked by what they saw. Not only was Rath still standing, but he looked almost completely unaffected by Natsu's attack! The tiger-like alien's head was merely turned slightly from the impact, with a bit of soot on his cheek. The Appoplexian simply turned his gaze to Natsu and wiped the soot off of his face. 

Rath: Is that all you got...? IS THAT ALL YOU GOT?! RATH'S BEEN HIT BY ICE CUBES HOTTER THAN THAT!

Natsu: WHAT'D YOU SAY?!

Rath: (crouched low) Now it's Rath's turn...

Rath suddenly leaped forward, and before Natsu could react, the feline alien shoulder-checked the Dragon Slayer, knocking the latter back several feet. Natsu was sent rolling across the ground but managed to catch himself and land in a crouching position. A second later, the pink-haired wizard rubbed his chest in slight pain, much to everyone's surprise.

This creature that Y/N had turned into was undeniably full of bravado, but it had the strength to back it up as well if it was able to injure Natsu enough for him to actually look pained. That said, the hotheaded wizard wasn't anywhere near done yet.

Natsu quickly picked himself up and began to puff out his cheeks, just like Y/N had seen him do earlier, in the forest.

Natsu: Fire Dragon Roar! 

In order to avoid Natsu incoming torrent of fire, Rath jumped high into the air, flipped, and landed behind the pyro-wizard.

Rath: SIRIUS BUTT-KICKING!

Rath reared back his leg and kicked Natsu in the rear, which sent the Dragon Slayer tumbling forward and onto his face. Rath then lifted Natsu upside-down and jumped into the air.

Rath: POLARIS PILEDRIVER!

The hero-turned-Appoplexian delivered a brutal piledriver on Natsu, leaving cracks in the stone-paved ground, causing some of the wizards in the crowd to wince.

Normally, the part of Rath's mind that was still Y/N wouldn't let himself go this far against an ordinary human opponent, but after that first blow, he realized that Natsu could take far more punishment than any human he'd ever met. Was that toughness a quality that all humans in this world shared, or was it unique to Natsu? Regardless, after that piledriver, Y/N figured that was the end of the fight.

He was therefore surprised to see that Natsu was already struggling back to his feet. However, not only was he able to rise, but he turned to face Rath with the same grin he'd been wearing this entire fight. That was certainly a shocker for Y/N. Natsu just had his head smashed against the solid stone, with the impact even leaving marks on the ground, but he was still excited for more?

Without a word, Natsu exhaled another powerful torrent of fire at Rath, with the Appoplexian dodging it by rolling out of the way. However, Natsu proceeded to follow Rath with a roar, leading the alien to have to run on all fours to continuously dodge it. When Natsu's flames died down, Y/N halted and began to think to himself.

Natsu may not be the brightest person he had met in this world, but he seemed to have a firm grasp on fighting. Natsu now knew that he couldn't out-muscle Rath, so he had decided to give ranged attacks a try. This tactic might have worked, had Rath been the only form Y/N could assume.

Rath reached his hand up to the Omnitrix dial on his chest, and slapped it, creating another green flash, leading most in the crowd, as well as Natsu, to shield their eyes.

When the flash died down, in Rath's place stood a tall, primarily red creature. It somewhat resembled a mollusk in its overall appearance, as it had several gray portholes on its shoulders, arms, palms, and thighs. It had a sloped hump, inside of which its head resided. Its face was also red, although with a gray, pointed chin, and four green, slit eyes. Its upper arms were smooth and black, as was its waist, the latter of which had four gray, insectoid appendages latched onto it from the upper, red portion of its torso. Said upper portion displayed the Omnitrix symbol, in between two green lights, which greatly resembled eyes. The top of its feet had gray, blade-like attachments on them.

Water Hazard: Water Hazard!

Back in the crowd, everyone was impressed and surprised by Y/N's sudden transformation, more so than the first time.

Gray: He can switch from one form to another?

Elfman: That's crazy... 

Lucy: I had no idea he could do that. We only ever saw him turn back into a human, and then into another creature. But now, it looks like he kinda has Erza's Re-Quip skills too!

Gray's face paled when Lucy said the name "Erza." Though she referred to the final member of their team offhandedly, Gray couldn't help but think...if Y/N was even close to being as strong as Erza...

Mirajane: Switching between forms like that is an incredibly advanced technique for Take-Over wizards. I'm surprised Y/N can manage it so easily.

Cana: I guess he is full of surprises.  

If Natsu was surprised at Y/N's sudden transformation switch, he did a good job of hiding it. The Dragon Slayer then puffed out his cheeks and exhaled yet another stream of fire at Water Hazard.

Natsu: Fire Dragon ROAR!!!

Water Hazard didn't even flinch, and instead held out his right hand towards the incoming fire torrent.

Suddenly, and much to everyone's surprise, a powerful jet of water erupted from the porthole on the palm of the mollusk-like creature's hand, and upon contact with the raging flames, stopped it in its tracks. It created a huge cloud of steam that surrounded Water Hazard, making him completely undetectable within it.

After a moment with nothing happening, suddenly, Water Hazard lunged out from the steam cloud and towards Natsu. The Orishan moved so quickly that Natsu didn't have time to react before he felt a powerful fist connect directly with his gut, knocking him back a couple of feet. Water Hazard quickly moved in and delivered another punch to Natsu's face, which he tried to follow up with another left hook, only for the Dragon Slayer to dodge and spin around, igniting his leg in flame as he did so.

Natsu: Fire Dragon Talon!

Water Hazard was surprised Natsu was able to recover from both a gut-shot and a right jab to the face so fast. He was so surprised, in fact, that he only barely managed to bring up his left arm to block the fiery kick that would've connected with the side of his headshell. The blow caused Water Hazard to slide across the ground a few feet to his right.

Water Hazard: Nimble, aren't you?

Natsu grinned as he wiped his mouth. 

Natsu: Haha! Thanks for the compliment! You're not doin' too bad yourself!

Water Hazard and Natsu stared one another down for a moment. At that moment, the teen hero realized he was gonna need something a bit more agile if he was going to keep up with Natsu. He knew just the alien for that. However, before he could reach up to switch aliens, Natsu had lunged at him, fists blazing and was prepared to strike again. 

Water Hazard reacted by lifting up both of his arms, and blasted twin jets of water straight into Natsu's face, sending the wizard flying back about a meter. Natsu landed on his feet but was coughing up water as a result of his face being blasted with it. 

With Natsu distracted, Y/N slapped the Omnitrix dial, and in another green flash, Water Hazard was replaced with a roughly four-foot-tall, monkey-like alien with light blue fur. It had four arms, six green eyes, and its light blue hair, which had grayish-white streaks in it, was flipped up. The parts of its body that weren't covered in fur, namely its face, chest, belly, feet, and fingers, were all dark blue. It wore the Omnitrix dial on its chest, with four green sashes connected to it that wrapped around its body. It also had a tail that had two grayish-white striped at the end of it.

Spidermonkey: Spidermonkey! (monkey noises) 

Everyone watching was impressed yet again, but most was also slightly confused. How was this transformation going to aid him? It didn't look all that tough or strong. Without a moment's hesitation, Spidermonkey rushed forward over to Natsu.

Natsu, who was just recovering from the water he'd been blasted with, looked up to see a blue, three-fingered fist connect with his face, leading him to stumble slightly. Spidermonkey then delivered two considerably powerful kicks to Natsu's chest, one with each foot. These blows sent Natsu tumbling on his back.

However, Spidermonkey's six eyes all widened when he saw Natsu begin to spin on his back, using his hands to do so. The Fire Dragon Slayer's feet then began to ignite in flames, which grew more intense as he continued to spin. Within a few seconds, Natsu was shooting torrents of fire out of his feet; much to Y/N's shock.

Spidermonkey: Didn't know you could do that. (monkey sounds) (thoughts) He can shoot flames from his feet while break dancing? Okay, that's pretty cool.

Spidermonkey lowered his tail close to the ground and aimed it at Natsu's head. Much to everyone's surprise, a string of web then shot out from the ape-like alien's tail and latched onto Natsu face. Spidermonkey then grabbed the web string, and yanked on it as hard as he could, which pulled Natsu out from under himself, bringing his flame-shooting break dance to an end.

Natsu tried to yell something, but couldn't due to the web covering his face and mouth. Spidermonkey then reeled in his web somewhat and swung Natsu over his head, slamming him into the ground behind him. He did this one more time, leaving cracks in the ground yet again.

Spidermonkey looked at Natsu for a moment. Arachnichimps were deceptively strong. Ben thought that was the end of the fight until he saw Natsu begin to pick himself up, albeit with webbing still on his face. He looked right at Spidermonkey and could be heard yelling something. It sounded familiar, but Y/N couldn't make it out due to it being muffled. However, he quickly realized what it was when he saw the web around Natsu's face begin to glow orange.

A second later, and a huge blast of fire erupted from the webbing, and engulfing Spidermonkey inside of it. The Arachnichimp could only place his hands in front of his face in an attempt to block the flames, but it was no use; they were incredibly strong. He tried to use his web-shooting tail to swing himself out, but the webbing instantly melted away from the intense heat. After another moment or so, Natsu's breath attack ended, which sent Spidermonkey flying across the ring and onto his back. He looked pretty banged up, as he had large patches of scorched fur all over his body.

It took a moment for Spidermonkey to begin picking himself up off the ground, albeit shakily. That was certainly the most intense fire Y/N had ever felt. The Omnitrix bearer thought to himself as he stood up. He couldn't keep going as he was right now, so he needed to remedy the situation, and he knew just the way to do that.

Spidermonkey weakly slapped the Omnitrix on his chest, and in yet another emerald flash, he was replaced with a tall, humanoid plant-man. It had mostly pale green skin, save for two small patches of black skin on either shoulder, one under its chin and down its neck, and a large one on either side, extending from his hips to his arms. His head had a flame-like pattern to it, as a result of the red petals on the sides of his face, and the one yellow petal protruding upwards from his forehead, which, along with the rest of his face, was also completely black. He had root-like feet, and red, plant-like growths sprouting from his shoulders. He also had pale green growths sprouting from his forearms. It bore the Omnitrix dial on its chest, and its eyes were green with black slits for pupils. Though Y/N had transformed, there were still scorch marks all over his body from when Spidermonkey was hit.

Swampfire: Swampfire!

Swampfire steadily picked himself up until he stood tall and firm. It was then that scorch marks all over the Methanosian's body began to slowly but surely fade away, much to the shock and surprise of everyone watching, including Natsu.

Natsu: (surprised) But how?

Swampfire: (smirk) Weren't you listening earlier? I mentioned the regeneration thing, right?

A few seeds suddenly sprout from Swampfire's shoulder, which the Methanosian then grabbed, and lobbed at Natsu's feet; much to everyone's confusion. The seeds then burrow themselves underground, and a couple of seconds later, thick vines burst from the ground underneath Natsu, and wrap around him, effectively rendering him motionless.

That was definitely a shocker for the wizards watching, especially one man in particular. He was a tall, slim young man with black hair. His most notable physical trait was his hair, which was highly unusual, in that a single tuft of it on the top of his head jutted upwards, and was reminiscent of a plant's stem. The rest of his hair was relatively short and was rounded at his forehead. He also had it cut on both sides of his head, each one having a spiraling motif. He wore a white, long-sleeved t-shirt, with a pair of golden belts crossing his chest, each passing over one of his shoulders. He also wore dark green, checkered pants.

This was Droy. His magic allowed him to create and control plant life through the use of magical seeds.

Droy: He can control plants too?!

Next to Droy, stood both Levy, and another man as well, who was also slim, and was of average height. He had orange hair, which was kept jutting backward at the sides of his head. He had a bit of a sharp face overall, along with a prominently flat and defined nose that pointed downwards. He wore an open, light brown coat with white fur trimmings on its edges and sleeves, the latter of which reached down just below his elbows. Underneath this coat was a high-collared, light purple shirt, with its collar mostly left open. He also wore dark, baggy pants, the legs of which were tucked inside dark-colored boots. The most distinctive part of his attire was the fancy, extremely high hat that matched his coat, with a large brim and fur trimmings over its entire length, at regular intervals, in addition to a large, furry ball at the top of it.

This man went by the nickname, "Jet." His magic allows him to run at exceptionally fast speeds.

Jet: (smirk) As long as he doesn't have anything in that watch of his that's faster than me, I think we're good.

Levy: Actually, he just might. He did say super-speed was one of his powers, after all.

Hearing Levy say that made Jet feel a little smaller...

Back in the fight, Natsu was still struggling against the vines that held him, but to no avail.

Swampfire: (places his hands on his hips) You ready to give up yet?

Natsu: Yeah right! You think I can't bust outta these?!

Just then, Natsu's entire body was consumed in powerful flames as he yelled continuously. With each passing second, the flames around him grew hotter and brighter. Eventually, the vines restraining the Dragon Slayer burned away completely, allowing Natsu to land on the ground, and look back to Swampfire with a grin on his face yet again.

Natsu didn't waste any time before he ignited his right fist in flames and lunged at Swampfire once more. 

Natsu: Fire Dragon Iron Fist!

To the crowd's confusion, Swampfire simply stood there, not even attempting to dodge Natsu's incoming assault. They, along with Natsu, were all shocked when the Dragon Slayer's fiery fist went clean through the Methanosian's torso!

Several of the wizards watching cried out in fear, thinking that Natsu had just killed Y/N. Even Natsu was beginning to freak out.

Gray: You idiot! You really screwed up this time!

Natsu: (panicked) OH CRAP! OH MAN, I'M SORRY, I DIDN'T MEAN TO!

Natsu ceased his ramblings when he felt something tap on his head. He looked up to see Swampfire staring down at him, a grin on his face. A second later, Swampfire unleashed a powerful punch to his face before he kicks Natsu off with his right foot which sent the fire wizard tumbling back several feet.

When Natsu picked himself up, he looked at Swampfire with bewilderment. His eyes then widened when he saw the gaping hole in Swampfire's torso begin to close itself, being completely healed in a matter of seconds.

Natsu: Oh, I get it now...

Swampfire: Good. Didn't wanna have to explain it twice. Now, how about you have a taste of your own medicine?

Natsu simply tilted his head in confusion, wondering what Swampfire could mean by that. Before he could ask, a large ball of fire appeared in both of Swampfire's hands. The Methanosian then threw both fireballs at Natsu. However, this time, it was Natsu who didn't flinch from his opponent's attack. Instead, Natsu adorned his face with a smile that could only be described as hungry.

Natsu: Medicine is right! COME TO PAPA!

With that, Natsu reared back his head and took a deeper breath than Ben thought any human was capable of. In response to this, the flames that had landed on the ground in front of Natsu flew into the air in multiple small streaks, and then into the Dragon Slayer's mouth!

Swampfire: (surprised) Okay... Didn't know you could do that either.

Over in the crowd, Happy couldn't help but smile. There was no way Y/N could've known Natsu could do that. There were still some people in this world who didn't know that.

Happy: Bet Y/N never saw that one coming. There's no way he could've known that Natsu can eat fire to replenish his strength and magic energy."

Natsu let out a loud burp.

Natsu: HOO, boy! You gotta work on your appetizers, man! (wiped his mouth, grins) Even so...thanks for the grub, Y/N. Now I've got a fire in my belly that's ragin' to get out!

Natsu then begins to puff out his cheeks once more, much wider than Y/N had seen him do before. That could only mean one thing.

Natsu: Fire...Dragon...ROOOAAARRR!!!!

Natsu spit out what had to be the largest torrent of fire Y/N had seen him make since he'd met him. The flames were approaching Swampfire incredibly fast. In a split second decision, Swampfire reached up and slapped the Omnitrix dial on his chest, creating another green flash just as the flames made contact.

After several seconds of Y/N being completely engulfed in flames, Natsu's breathe attack finally died down. When the pink-headed looked to see what he thought would be Swampfire lying immobilized on the ground, he, and everyone else was shocked to see what appeared to be a humanoid moth-man, covered in a blue and black cloak, giving it the appearance reminiscent of a phantom. Aside from its appearance, the most shocking thing to everyone was that the creature looked completely unharmed!

Suddenly, the moth-man opened its cloak, which upon doing so, was revealed to actually be its wings that were considerably large. Its body was relatively the same color scheme as its cloak, with the front of its torso being blue, and the rest of its body being black, save for the few light blue splotches that were on its arms and legs, as well as the hints of blue on its face. Its teeth were also perpetually visible. 

Big Chill: Big Chill! 

Not at all intimidated by the appearance of this new, insect-like form of Y/N's, Natsu leaped forward, his leg wreathed in flame. 

Natsu: Fire Dragon Talon!

Once again, Y/N made no attempt to dodge the incoming attack, which led everyone watching to believe that this form also had regenerative powers of some sort. However, they were all surprised to see that rather than Natsu hitting Big Chill, he went straight through him instead, as if the moth-like alien wasn't even there!

After lunging straight through Big Chill, Natsu landed on his feet and turned back to the Necrofriggian in confusion.

Natsu: What the-?

Big Chill glanced back at the Dragon Slayer and grinned. 

Big Chill: Intangibility...comes in handy.

Natsu then leaped at Big Chill again, and tried to punch him with a fiery fist, but to no avail as his fist goes straight through the moth-like alien once again. Natsu tried to punch his adversary multiple times, but each time he ends up with the same results.

Natsu: Hey! What gives?!

Big Chill: I just told you. You can't touch me. Literally. Now, I think you need to cool off.

Natsu looked somewhat confused by Big Chill's statement, wondering what he could've meant by it.

Natsu: What're you-

Before Natsu could finish his question, Big Chill took a deep breath and exhaled a blast of freezing vapor directly at Natsu's face. Upon contact with Natsu's head, the vapor drastically reduced the temperature of the air around it, thus effectively encasing Natsu's head in a thick chunk of ice.

In the crowd, Gray's eyes widened. He wasn't expecting that at all, nor did anyone else.

Gray: (shocked) He has ice powers too?! Is there anything this guy can't do?!

Lucy: For real! Strength, plants, fire, webs, and now ice too?!

Levy: He may have ice powers, but that breath he just used didn't seem quite as powerful as your magic, Gray.

Happy: Yeah, it doesn't look like he can really make anything out of it. He just breathes it!

It didn't take long for Natsu to melt the ice around his head with fire from his hands. Once he did, he glared back at Big Chill.

Natsu: Did ya really think ice was gonna hold me?! Come on, man! What else ya got?!

Big Chill mentally slapped himself for that one. Natsu was right. Why did he think ice was going to hold someone who could ignite their entire body in fire? He looked back to Natsu and began to think.

Water Hazard was his best advantage over Natsu, but judging from the one hit the Orishan took from him, he likely couldn't take too many more. His exoskeleton was tough, but he still felt the force behind that one kick. Spidermonkey was more agile than Natsu, but couldn't take a direct hit from his breath attack. Swampfire was at an elemental stalemate with him; since they both used fire, neither one would really get anywhere, especially considering Natsu could easily burn Swampfire's vines away with his magic. Y/N didn't want to use any of his heavy-hitters like Four Arms or Humungousaur against the guy; after all, he could end up hurting him pretty severely with one of those. So what could he do to finally put this match to an end? What was this guy's weakness?

A light-bulb went off in Y/N's head at that moment. He knew exactly how to beat Natsu.

Big Chill: Alright, Natsu. I'm giving you one last chance to forfeit! I suggest you take it, otherwise, you might be feeling this tomorrow.

Natsu simply grinned wider at Big Chill's threat, excited that he'd get to see yet another one of Ben's forms. He was feeling pretty confident. He'd already forced Ben to switch aliens multiple times and was excited to see what else the shape-shifter had up his sleeve.

Natsu: You gotta be kidding, man! This is great! I'm so fired up I feel like I'm about to explode!

Big Chill's neutral frown shifted to a slight grin upon hearing Natsu say that.

Big Chill: Fine then. But don't say I didn't warn you.

Natsu leaped into the air, above Big Chill, his arms wreathed in flames. He swung his arms around in circles a few times, before hurling them at the moth-man. 

Natsu: Fire Dragon Wing Attack!

The area around Big Chill erupted in a fiery explosion, with Natsu landing on the other side of where he once stood, a few feet away from the smoke plume. The Dragon Slayer then took a look back at where Big Chill was waiting for the smoke to clear so he could see what damage he'd done. However, he, along with everyone else, was surprised to see another green flash shine through the smoke of the powerful fire spell.

After a moment, the smoke cleared, to reveal a hulking, broad-shouldered creature with white skin. Its face was on its torso, and it had no neck or actual head. Its mouth was large, and had black lips, with its green eyes also being surrounded by black marks. The top of its head was black, and from that, a thick, black stripe jutted down in between its eyes, with a similar stripe jutting up from between its legs, and up most of its torso, ending shortly below its lips. It had natural yellow armor all across its back with thin, black gaps between each plate. It also bore this yellow armor on its shoulders, hips, and the backs of its hands. Its palms were completely flat, and it had four black claws on each hand, as well as three claws on its somewhat stubby legs. The Omnitrix dial rested on the black strip of his chest. 

Cannonbolt: Cannonbolt!

Everyone in the crowd was rather perplexed by the appearance of this most recent form of Y/N's. Most of the forms they had seen thus far were strange in their own way, but this was by far the most bizarre. What could it do?

As if in answer to everyone's question, Cannonbolt used Natsu's puzzlement to his advantage as he took two steps over to the Dragon Slayer, and wrapped him in a large bear-hug. At first, everyone thought Y/N was trying to crush Natsu; however, they were proven wrong when Cannonbolt suddenly curled up into a big, yellow ball, concealing all of his white skin. Now they were especially confused.

Natsu: Hey! What's the big idea?! Lemme outta here!

Although the wizards on the outside of Cannonbolt's now-spherical form couldn't make out what Natsu was saying, they could see the yellow ball rumbling slightly, likely from Natsu trying to punch or kick his way out. Cannonbolt, however, heard him loud and clear.

Cannonbolt: Not a chance. Now, let's roll!

With that, Cannonbolt suddenly began to spin in place, much to the surrounding wizards' surprise. A few moments of spinning later, after Cannonbolt had left a significant furrow in the ground, the spherical alien then shot forward, rolling at a considerably fast speed. The Arburian Pelarota then shifted his aim and began to roll in a large, wide circle with Natsu still inside.

Lucy: What's he doing to Natsu?!

Happy's eyes widened in realization. 

Happy: Oh, I know! He remembered Natsu's motion sickness from the train earlier, and he's using it against him!"

Gray folded his arms and smirked. 

Gray: So he's doesn't just have power, but he's got a brain to boot. Not bad...

After a few moments, Cannonbolt ceased his rolling around, and uncurled himself, allowing a thoroughly dizzy and motion sick Natsu to fall to the ground, ready to puke his guts out.

Cannonbolt: I think we're done here.

In the crowd, Makarov had been observing the fight very closely. Needless to say, he was just as impressed by Y/N's power and variety as everyone else was as well as the intellect he displayed. However, this fight raised a few questions in Makarov's mind.

Regardless, with that, Makarov entered the ring and stood next to the defeated Natsu and the triumphant Cannonbolt.

Makarov: This fight is now over! And the winner is Y/N Tennyson!

Most of the wizards in the crowd were still in shock at the result of the fight. Y/N had just defeated Natsu, and while others have accomplished this in the past, everyone was still surprised by how he had done it. No one had ever used Natsu's motion sickness as a weakness during a fight before.

Cannonbolt reached up and tapped the Omnitrix dial on his torso, and in another green flash, he returned to his human form. He then turned to the crowd of wizards who had been watching the fight. For a moment, he had thought the members of Fairy Tail would be angry or upset that they had beaten their friend in a fight, but it was quite the opposite, as he was met with thunderous applause; much to his surprise.

Gray, Lucy, and Happy all walked over to a now-victorious Y/N.

Lucy: That was awesome, Y/N!

Happy: Aye!

Gray: Good show out there, man. It never gets old seein' charcoal-breath over there getting his butt whooped.

Y/N: (chuckles) Well, I'm glad it was entertaining at least.

It was then that the superhero looked down, and looked back up at Gray with an exasperated expression. 

Y/N: Uh... Gray? Your clothes...?

Gray looked down at himself to see that, once again, he had managed to strip down to only his boxers.

Gray: CRAP!!!

As Gray scrambled for his clothes, Y/N turned around to see that Natsu was currently struggling to his feet, still looking queasy from Cannonbolt's attack earlier. He then walked over to him, and in a show of good sportsmanship, he held out his hand to help Natsu up.

Y/N: You okay, man?

Natsu: (weakly grin) Yeah ....It's nothin'....I'll be okay...can't wait to kick your butt for real next time...

Y/N: Hey, remember our deal. You agreed to it, so there's no backing out. This is the last fight you and I are gonna have. Besides, I don't think you really wanna take another trip with Cannonbolt, do you?

The only response Y/N received from Natsu was the latter's cheeks puffing out, and the Dragon Slayer holding his hand to his mouth at the mere thought of rolling around in Cannonbolt's ball form again.

Y/N began to chuckle at how easily Natsu's motion sickness could be triggered until he heard a new voice call out over the noise of the crowd of wizards.

???: What's all this commotion?

The instant everyone heard the voice speak, it became dead quiet. Natsu's face became even paler than it already was upon hearing it, much to Y/N's confusion. The Omnitrix bearer turned around to see the source of the voice, to find that it was a young woman, who looked roughly his age but carried a strong, firm attitude. The first thing he noticed about her was the color of her hair, which was a bright scarlet color. The next thing that stood out to him is that she was almost completely covered in armor. She wore a breastplate over her torso, which had a red Fairy Tail emblem over the left breast, and a golden, asymmetrical cross that intersected over top of that. Her shoulders had three-layered shoulder plates, and she wore greaves on her forearms that ended in a wing-like structure at her elbows. She also wore a blue skirt, which was covered slightly by plates of armor attached to brown, leather straps that connected to her equally brown belt. In addition, she also wore black, knee-length boots.

Another thing that stood out to Y/N is that, despite her unusual wardrobe choice, she was remarkably pretty. Even more so than Mirajane. 

Y/N's Thoughts: (blush) Oh wow, she's so beautiful and pretty. Who is this girl? 

However, it was then that Y/N took a look around at the gathering of wizards. For some reason that he couldn't understand, everyone present, save for Makarov and Mirajane, paled just as much as Natsu at the sight of this woman, and were slowly but steadily backing away in what appeared to be fear.

The scarlet-haired woman glanced around at the now-silent wizards, and narrowed her brow, seemingly irritated that no one was answering her question. However, Mirajane was the first one to break the silence as she approached the armored woman.

Mirajane: Welcome back, Erza! I'm assuming the job in Freesia went well?

The armor-clad, scarlet-haired woman, now known as Erza, turned to Mirajane with a neutral expression.

Erza: Yes, it went quite well. The townspeople are safe and it would appear that they're still upset about Natsu destroying their historic church. Now, I don't suppose you could tell me why everyone has gathered outside of the guild hall? Don't tell me Natsu and Gray have gotten into another fight...

Mirajane: Well, it wasn't Gray, exactly, but...

She then waved Y/N over, to which the shape-shifter responded by approaching the two ladies.

Mirajane: Erza, this is Y/N. Lucy and Natsu ran into him while they were out on a job today. He has no place to go, so Master is letting him stay here until he can get home. After he explained where he was from and what he could do, Natsu challenged him to a fight and lost. You just missed it, unfortunately.

Erza then turned to Y/N and gave him a hard stare, which caused most of the wizards watching to turn even paler.

Erza: Is this true?

Y/N: Well, that was more of a brief summary, if anything, but yeah. Pretty much.

Erza turned her gaze to Natsu, who froze completely upon realizing she was looking at him. However, she quickly returned her attention to Y/N and held out her armored hand.

Erza: (smile) It's a pleasure to meet you, Y/N. My name is Erza Scarlet.

Y/N's eyes widened ever-so-slightly at Erza's reaction to Mirajane's explanation, or rather, her lack of one. Even so, Y/N took her hand and shook it with a smile on his face.

Y/N: (smile) I'm Y/N Tennyson. It's a pleasure to meet you too, Erza.

After their handshake, Erza focused her attention on a certain Dragon Slayer, who, as the armored wizard approached him, began to tremble in fear along with most of the other wizards watching. She gave Natsu a good looking-over, almost as if she were checking to see if he was injured. 

Y/N's Thoughts: What's everyone so worked up about? She's just seeing if he's alright.

As if on cue, Erza brought her armored fist down onto Natsu's head with an audible clang, leading Y/N and everyone else, to wince.

Y/N's Thoughts: Oh... I guess that's why.

Erza: You idiot! How dare you challenge a guest of this guild to a fight! I have half a mind to beat you myself!

Before Erza could carry out her threat, Makarov quickly stepped in and pulled the redheaded wizard away from Natsu, with the latter instantly scurrying over to the guild hall's entrance afterward.

Makarov: Now, now, Erza. Settle down.

As Makarov tried to calm Erza, several feet away from the two of them were Y/N, Gray, Lucy, Elfman, and Happy. Y/N looked to the group and pointed to Erza. 

Y/N: What was all that about?

Happy: That's Erza for yah. Always bringin' down the iron fist. She's the strongest woman in Fairy Tail! She's super strong and super scary!

Elfman: She's the manliest one in the guild...

Gray: You do not wanna get on her bad side. Period.

All Y/N could do was stare at his newfound friends in slight bafflement. Was her strength really enough to warrant all this fear from everyone? Granted, it sounded like they still respected her, but even so, she didn't seem scary at all to Y/N, or at least not from their brief interaction anyway.

Y/N was snapped out of his musings when Makarov began to speak, with Erza standing at his side as he did so. 

Makarov: Alright everyone, as fun as it was, the show's over now! Time for you to head back inside!

With that, the wizards all began filing back into the guild hall, with Makarov, Erza, Y/N, Gray, Lucy, Elfman, and Happy following them. It was still fairly early in the afternoon, so Y/N figured he might as well get accustomed to the place he'd be staying for the foreseeable future.

Chapter 3 ended. 

What do you think of this fight scene between Natsu and Y/N? Awesome, right? 

Anyway, before I end this, I'm gonna add one more alien which would be perfect. Elementor/Elementors from Max Steel.  

This transformation can wield fire, earth, water, air, and metal. They can even fuse themselves into more powerful forms, separate to make five own elements of themselves, have their own personalities, and can even combine elements to make like ice, lightning, and magma.  

(Fire and Air are voiced by Andrew Francis, Earth and Water are voiced by Brain Drummond, and Metal is voiced by Trevor Devall)

Let me know what you guys think at the comments below, peace out and enjoy!