Things were starting to get serious in on the space station that you and your team had been assigned to as what seemed to be the "Entity" that the captain had told you about was now on the move

Mecha Sonic: Yes, The Final Emerald. Now I shall become an unstoppable force.

Mecha Sonic then smashed the class dome open with his fist as he began to gaze upon the Emerald

Mecha Sonic: The Seventh Chaos Emerald. Anyone who collects them all shall receive a power that can can be topped by no one.

???: Hey!

The Robot then turned around as he grabbed the Emerald, his eyes glowing as he spotted you and Mori standing at where the door used to be

Y/N: What do you think you're doing?

Mecha Sonic: So you want to step in my way? So be it. Face me!

Y/N: Leave this to me, I've been itching for a fight.

Mori: No way! I'm here for a reason! Lemme fight too!

Mecha Sonic: Enough!

Both: Huh?

Mecha Sonic then bolted directly towards the both of you with his fist reeled back as you grinned and got into a fighting stance

The Blue Robot approached at high speeds as you simply caught the punch to his surprise

Mecha Sonic: What?!

You then smashed your foot directly into the Robot's torso as it went flying back, crashing into the wall and making a dent as things in the room began to fall over

You then leaped into action as you gained a large base aura and charged towards him, Mecha Sonic jumping out of the way as you missed and punched a hole in the wall

Mecha Sonic: This one holds a great amount power, I cannot risk to make any errors.

Mecha Sonic then gained a large yellow aura as the entire structure began to shake violently, leaving Mori surprised

Meanwhile

Rias and Lotte were both struggling to maintain their balance as the space station only shook more and more as time went on, both of them in a somewhat panicked state of mind

Lotte: W-What's going on?!

Rias: It must be Y/N!

Back To You

You and Mori watched with a mixture of feelings as Mecha Sonic touched down onto the floor and faced you, he had now mostly turned yellow, but that was it

Semi Super Mecha Sonic
(Six Chaos Emeralds)

Y/N: What are you, a Saiyan Android?

Mecha Sonic: You fool, now you'll face death, I'LL CRUSH YOU!!

Y/N: Bring it on!!

Suddenly Mecha Sonic warped behind you and delivered a swift kick to your back, sending you hurling into the air as he then followed with a heavy punch to the side, this sent you zooming out the door as Mori watched with wide eyes

You had managed to recover from his little attack as you began to skid across the hallway on your two feet, thinking to yourself for a moment

Y/N: He shouldn't be this strong for a full on robot, somebody must've altered his power before he got here, there's only one person I know who can do that...

You then brought yourself to a stop as Mecha Sonic appeared in front of you at high speeds, acting quickly you flashed into Super Saiyan 3 and crossed your arms before tanking another powerful punch

You were now flying all around the space station as Mecha Sonic chased you at speeds even higher than before, he was clearly adapting to your fighting styles despite the fact that you had only hit him once so far

Mecha Sonic then began to warp all over the place as you were quick to move to the side and dodge a fast kick, putting your hands together and smashing him in the torso with a powerful sledge hammer attack

Rias and Lotte witnessed the two of you moving all over the place at high speeds as Lotte watched anxiously, Rias on the other hand wasn't very concerned

Rias: What has you so worried, Lotte?

Lotte: I'm just paranoid, what if he gets seriously hurt...?!

Rias: He'll be fine, Y/N gets chucked through planets for a morning work out.

They continued to watch as you were now both exchanging blows at faster than the normal eye could see, from the looks of it, this battle was currently a contest of speed

Gritting you're teeth as Mecha Sonic chuckled, you reeled your fist back and nailed him in the fact with a heavy punch, sending him flying back as he recovered almost immediately

Speeding towards you and letting out a Mechanical roar, Mecha Sonic then smashed his knee into your stomach which caused you to gag up a little bit of blood, sending you rolling across the hallway as you then crashed into a wall

Mecha Sonic: Is that your best?

You then emerged from the wall as you shouted with a mighty aura with bits of lighting surging around you, flying towards him as you readied a Ki blast in the palm of your hand

Y/N: Not even close!!

You then fired a large orb of energy towards Mecha Sonic who simply grabbed it and crushed it in his hand as you then football style rammed him across the hallway

Mecha Sonic was quick to raise a fist and swing at you to which you caught his fist, you followed his gesture and tried to punch him as well to which he caught your fist

The two of you were now standing in the middle of the hallway with your right fist in Mecha Sonic's hand, and your left hand holding his fist

A few seconds past by as you began to sweat intensely due to the pressure, this allowed Mecha Sonic to slowly overwhelm you as he started to push you back

Mecha Sonic: Spare me your weakness, I will kill you now!!

You gritted your teeth hard as you struggled to push him back, however that is when you closed your eyes for a short moment and opening them again to reveal that they were now bright red

Mecha Sonic: What's this...?

Mori was able to catch up as he too saw that your eyes were now bright red, this surprised him as he began to think of what it could be

Mori: Wait, is that the Akuryo?!

Eye-Catch

Eye-Catch

You then landed a powerful punch to Mecha Sonic's face as he went flying back, screaming in pain as he went right through the wall in the distance

You then gained a familiar godly aura as you then transformed into Super Saiyan God, allowing Mori to calm himself down

Mori: Phew! I got worried for a second there...!

Mecha Sonic then emerged from where he had crashed as he rushed towards you at his highest speed yet, but at his current level, it might as well be a snail compared to Super Saiyan God

You then dodged a series of punches and kicks from Mecha Sonic as you then grabbed one of his legs and slammed him multiple times onto the floor

Mecha Sonic: W-What is this...?!

Y/N: This is Super Saiyan God, it's on a whole other level from the form you were just facing a moment ago, this is over.

You then tossed him into the air and formed a red orb of Ki in your hand, forcing your palm onto his chest as the blast sent him flying through multiple walls of the structure

Y/N: Gravity Bash...haven't used that one in a good while.

Mori: Talk about Godly!

Meanwhile, Mecha Sonic now found himself back in the test lab where the final emerald was, however he was hardly able to even move after your last attack

Mecha Sonic: Tch...You...You pest...!!

Mecha Sonic then noticed the Emerald glowing about 6 feet away from him, but even then, he wasn't quite able to reach it

Mecha Sonic: Dammit...Come to me...Chaos Control!

Back To You

You were still in Super Saiyan God while standing next to Mori who was amazed at your God Form, despite being up against a greater form

Y/N: That last attack should have finished him off, let's go and retrieve him now so we can go home.

Mori: Right...

With that you and Mori were about to make your way to where Mecha Sonic was when all of a sudden a massive explosion of light bursted in the distance, you sensed Mecha Sonic's Power skyrocket as both of you went wide eyed

Y/N: Shit...!!

Mori: Looks like we'll have to hang up on him this time around...you alright with that?

Y/N: Fine, let's just get this over with...

With that Mecha Sonic began to walk out from the many holes in the wall that you had made, eventually getting close enough for you to see him in the distance

He had gone through some noticeable changes as his eyes began to glow once again again, shining into an intimating shade of red as he stayed completely silent for a matter of moments

Metallix

Y/N: Tch, so you still wanna fight...? Alright! Let's go, Mori!

With that you and Mori both dashed towards him at the same time as Mori activated his Monkey King mode, approaching him at high speeds as you got ready to punch him, while Mori got ready to kick him

Both: HAA!!

Faster than the naked eye could see, he blocked both of your attacks as his eyes began to glow once more, suddenly firing a massive beam of red energy that engulfed both You and Mori

You and Mori both slid across the floor now both reverted to base form, your bodies covered in open wounds you were beyond shocked

Y/N: How did he get this much stronger...?! He only has one more than before...!!

Metallix: I know the two of you must be confused, this is the power that all Seven Chaos Emeralds can harness, it's quite amazing, is it not? Now, it's time for you both to die.

You then slowly picked yourself up from the floor as Metallix's arm then turned into a blaster of some sort as it began to charge up one last attack, capable of obliterating you both

Metallix: DIE!!

Metallix then leaped into the air and fired his attack which consisted of a massive beam of green energy that was headed straight for you

Luckily you had managed to grab Mori and move out of the way at the last second, however the ship now had a large hole which meant oxygen would start running out soon

Y/N: Damn, we best start picking up the pace here...

All of a sudden you gained a massive blue aura as you quickly transformed into Super Saiyan Blue Evolution, a form you hadn't used in quite a while

Metallix began to chuckle as his eyes continued to glow in a menacing fashion, it was getting harder to breathe by the minute

Y/N: You'll be placed in the scrap heap once I'm done with you!!