A/N: Taking inspiration from Luigi's Mansion, the best example to show what the Green Thunder is capable of. There won't be much of it, just the intro and explaining the basic idea of what the game's story.

"So, is everyone ready?", Z asked the group, his voice full of joy, "Yeah, but you happy again?", Ochako asked. "Oh yeah, see, what I'm doing here is actually very popular with other Gods", Z said, a few were surprised at that. "Really?", All Might asked, "Yeah, it's surprising on how many times this has been viewed by other Gods, including myself", Glowster explained. "Yup, an I even made a system that tells me how many times that has happened", Z explained as he held a small phone.

"Well, how many times have we been watched?", Endeavor asked, everyone now looking at him. "Well, it's not uncommon for some to rematch your reactions, so the closest estimation is around 14,000 times, and it's still rising!", Z exclaimed. Everyone was shocked to hear that, especially the part where they're rematched just for reactions.

*FWEEEEE!*

Everyone jumped at the sudden sound of a party noise maker, turning to see that Zeik had suddenly appeared. "LET'S CELEBRATE!!", he shouted as he wore a party hat and held up a champagne bottle and wine glasses. He then handed one to Z, Glowster, and every adult in the room, "CHEERS TO THE STORY!!", Zeik said as he raised a glass in the air. The rest, albeit confused, did so, with Zeik tossing his glass away and started chugging the champagne straight out the bottle.

"Um, it's good to see you again Zeik, but aren't you a little young to be drinking?", Inko asked in worry. Z and Zeik looked at her, than each other, than back at her, until they bursted out laughing. They started laughing so hard that Zeik dropped the bottle and started holding onto Z as he held his sides. "Uh, what's the joke?", Ms. Joke asked, the two stopping their laughter long enough to answer her.

"Ahaha, man, well, how old do you think I am?", Zeik asked, "I don't know, 16, 17?", David said, uncertain of his answer. This just made Zeik laugh harder, so much that he fell and held onto his sides for dear life, everyone looking lost. "Again, where's the joke!?", Ms. Joke yelled in frustration of not hearing the possible joke. "Care to explain?", Gran Torino asked Z, who was very amused at that whole scenarios, "Well, remember when I have you that book?", Z asked.

"The one Zeik took back?", Ochako asked, "Yes, and remember the first question you asked it and what it answered?", Z asked. "Yeah, oh yeah, it said that he was the oldest mortal in the multiverse?", Ochako said, the newcomers confused. "Yeah, well it's fairly accurate", Z said as he looked at a still laughing Zeik, "Man, I haven't seen him laugh this much since someone asked if he was rich", Z said.

"HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA, STOP, STOP, I'M GONNA PEE MYSELF, AHAHAHAHAHA!!!!", Zeik shouted as he face started turning red. "Yeesh, how old is he?", Sero asked, Zeik finally calming down, but was still partially giggling. "Now that I think about it, how old are you now Zeik?", Z asked his friend, who was just smiling. "Well in a few days, I'm turning 1 googolplex and 1", Zeik said with a cheeky grin.

(Those who don't know, a googolplex is the highest number so far, it's literally a 1 fallowed by a hundred zeros!)

Everyone who did know how old that was paled at the vast number, while everyone else were all confused. "I don't get it, what's so special about that?", Kaminari asked, "Dude, that's like the highest number there is!", Mineta told his fellow perv. "Really, how do you look so young despite that?", asked an envious Mountain Lady, Midnight agreeing. "Good jeans and enough magic in your body to kick a wizards ass six ways from Sunday!", Zeik said.

"Wow, your birthday's not that far away?", Z asked, "Yup, not surprised you lost track given how much work we're both doin', so don't sweat it", Zeik said with a wave.

(That's actually true for my real life self. On the 18th, I'm turning 19. Free story to whoever guesses the math on that. But yeah, I'm getting older.)

"Anyway, good luck with Weegi here, would've been bigger on the year of Luigi", Zeik said as he vanished, leaving a confused audience. "The Hell did he mean by that?", Katsuki asked, "Oh it has something to do with this world, which Glowster will explain, do enjoy", Z said, also leaving as the world started.

A dark, story night was shown with a large mansion on top of a hill as rain poured down like a waterfall. Thunder boomed in the distance as, what appeared to be a small figure approaching the front door. Cut to a white, gloved hand rose up to the doorknob, but the person's entire arm was shaking. But, with a forced jolt, the figure grabbed the doorknob and opened it to go inside, but was opened slowly.

Inside showed a different view of the figure opening the door, who was quite familiar, but also not. He was a tall man, almost 7ft, with blue overalls, a green long sleeve shirt, white gloves, and brown boots. He had a green cap with a white 'L' on the front with a big, bushy mustache, and big blue eyes that were full of fear.

"Whoa, it's Deku", Ochako said, "Why does he look like that?", Kota asked, confused why his hero looks so~, goofy. "And that mustache, it looks so weird on him", Toru said, "Why's there an 'L' on his hat?", Katsuki asked, resisting the urge to insult him. "That's for his name", Glowster said, "His name begins with an 'L'?", Inko asked, very curious. "Yes, but it should be explained soon", Glowster said with a shrug.

His entire form was shaking as he looked inside, only to see darkness, which made him start clattering his teeth. Pulling out a flashlight, he was reluctant to even turn it on, but did anyway, "H-hello?", he asked in fear with an Italian accent.

"What's with him getting a different accent in almost all these worlds?", Kendo asked, "Maybe it's a different world thing, were subtle changes are done", Momo guessed. "You're half right, but that kind of information is too much to say for this world", Glowster said, only raising more questions.

Stepping further inside, the door shut behind him, making him jump a little as he waved his flashlight everywhere in a worry. The entire entrance was huge, with two staircases going up a floor, a chandelier, and another double doors. It was cold, he was scared, and he didn't know what to do, so he turned back around to get out of there. But, the door was locked, and no matter how hard he tried to pull, the door wouldn't budge, "IT'S STUCK!!", he shouted in fear.

"Oh no, is he gonna be ok?", Eri asked, "Don't worry, if Midoriya's taught us anything is that he doesn't give up, no matter what", All Might said with a grin.

Hahahaha...

The faint sound of laughing made the man's blood freeze as he looked around, paling at the sight of an orange mist floating in the air, a key in it's center. The man was scared, thinking that the mist was looking at him, but then zoomed out the room in a hurry, the key landing with a cling.

The group were scared of that as well, "Was that what I think it was?", Inko asked with a shaking raised hand. "Depends, do you want the answer that good, or the one that'll scare you, and be warned, one of them isn't real", Glowster joked. Inko shook her head, "But seriously, what was that?", Mina asked with a shaking voice, "It'll say soon", Glowster said.

The man slowly picked up the keep, thinking it was a trap, but nothing had happened when he did. Deciding that it was the way out of the room, he first tried it on the front door, and moaned in displeasure as it wasn't the right one. Looking behind him, he saw the other doors and tried them, which they sadly did, 'Oh no', he thought.

"Why is he scared, shouldn't he be glad to get out of there?", Lida asked, "Because whatever that was could be in any room or more of it. Going deeper in that place is like going into a villains hideout without backup", Ectoplasm explained. The students understood and we're now more scared for their friend, though probably not as much as he is right now.

Stepping into the new room, he started taking light steps, looking around for any danger as he was shaking with terror. Just as he was about to take another step, a new, transparent figure appeared right in front of him. Their body was completely orange with no legs and was raising their hands up in a scaring motion.

"RRRRRAAAA!!!",

"EEEEEEEEEEEYYYYYYYYYAAA!!!", the man shouted as he nearly jumped out of his skin in pure terror.

"GHOST?!?!?", everyone shouted in shock/fear, some even clinging to each other out of fear. "But that's impossible, ghost don't exist!", David said as he held onto Melissa, "In your world, maybe. But in other worlds, they're as real as you or me", Glowster said seriously.

The man was now on his butt, backing away as the ghost came closer, it's creepy grin not helping. But when the ghost was about to grab him, it started holding their head in what appeared to be pain. The man was confused, until he saw a strange wind vortex over the creature's head, which lead back too a strange sight.

On the side was a senior male with a short stature, a white lab coat, black pants and boots. His head was nearly bald, minus a small but of hair in the top of it, with swirling glasses, a red nose, and a goofy grin that showed only one tooth. What surprised the man the most was that in his hands was what seemed like a vacuum that was trying to suck in the ghost.

"He's saved", Tsuyu cheered, "And by an old guy, apparently", Sero said, not sure wether to be impressed or confused. "He looks about my age", Gran Torino said, "Maybe older sensei", All Might added, also surprised by the man's sudden appearance.

The ghost started to fight against the vacuum's pull, trying to fly away, only to drag the old man with it. They started to fly around the room, the old man now being dragged across the floor, until the ghost whacked him away. The ghost laughed as it disappeared, the old man hunched over in pain.

The green one from before walked towards the old man in worry that it may be another trap of if he's hurt. "Oof, I sure take a lot of knocks in this line of work", the old man said with a smile to the green one. He grinned as he got up, "I'm getting too old for this ghost-catching tomfoolery", the man said with a giggle. "Anyway, nice to met you, I'm Professor E. Gadd", the Professor introduced himself.

A few giggled at his funny sounding voice, but not as much as his ridiculous name, "Seriously, his parents went for that?", Mineta said as he struggled not to laugh. "He's funny", Eri said with a snort, "It was still nice of him to save Midoriya", Nejire said.

"This house... I swear it seems to have more ghosts everyday!", the Professor said with a huff. "What's a young feller like you doing around here, anyhoo?", the Professor asked as he looked back at the still unnamed man. Before he could answer, three more of the ghosts from before appeared, and the two looked overwhelmed.

"Run!", Jiro shouted at the screen in worry, something shared by everyone else in the room.

"Alright youngster, look lively! Follow me, posthaste!", the Professor said as he and the man ran out the room.

Outside:

E. Gadd lead them to his outside base on the lawn of the mansion, where he and the man sat down to talk. "Alright, what's yer name sonny boy?", the Professor asked, the other still looking scared. "M-my name is Luigi, and I came here since my brother called for me", Luigi said, looking around for anymore ghosts.

"Luigi, what an odd name", Inko said, finally calmed down after the last scene, "Still not the weirdest one he's had", Mountain Lady said. "So he's there for his brother", Midnight said with a hum, "Must've been urgent", KW suggested.

"Your brother huh, what's he look like?", the Professor asked, "Well, he dresses like me, but in red, a bigger mustache, and is a foot shorter than I am", Luigi explained. "Oh no", the Professor said, his voice no longer having a small cheer to it, "What, what is it!?", Luigi asked in worry.

"That can't be good", Mei said for the group.

"I think I saw him, but I'm afraid he was captured", E. Gadd said, Luigi going silent as he stared at the outside. "I have to save him!", Luigi said as he bolted from his seat and ran for the door, "Luigi wait, you can't, it's too dangerous!", the Professor said. "But he's in danger, I gotta get him out!", Luigi shouted back at him from the door, his eyes showing his immense worry. "You won't last 1 minute against those ghosts, you need the proper tools", E. Gadd said, trying to calm him down.

"What, like the vacuum he was using before?", Power Loader guessed, "Perhaps, but that didn't do much when he did use it", RG said.

"What tools?", Luigi asked, the Professor grabbing his vacuum and handing it to Luigi, "This!", the Professor said with a proud smile. The vacuum was of a different design, though looked the same to any regular vacuum, just more handheld. It had a strap to go on his back and a dial to change settings, the current one being high.

"Again, it's just a regular old vacuum", Mei said, sounding unimpressed.

"How's a vacuum gonna help me fight ghosts?", Luigi asked as he held the strange device in his hands. "Oh no sir, this isn't a regular vacuum, I call it the Poltergust 3000, the only vacuum designed to suck up non-living creatures", E. Gadd said proudly.

"WHAT, WHERE ARE THIS MACHINE'S BLUEPRINTS?!?", Power Loader and Mei shouted in unison. "Nerds", Katsuki said with a grunt.

"But it didn't do much when you used it earlier", Luigi said as he slipped the pack on, getting a feel for it. "I'm not as spry as I used to be, but you my boy can use this to get those ghosts and find your brother", E. Gadd said, Luigi nodding.

"He can do it!", Kota and Eri cheered, making the audience coo and fawn over their adorable chant.

Cut to the mansion's front lawn where E. Gadd was waving off Luigi who was making his way back to the house. A close up on his face showed his fear, but was gonna go in and save his brother no matter what happened. A panned shot had Luigi walking towards the mansion where a clear view of the area was shown, a thunderbolt ranging down.

While it was faint, you could see a round, silhouette above the house, with ghostly laughing echoing in the distance.

[There should be a GIF or video here. Update the app now to see it.]

A few shook at the laugh, praying that Luigi will make it out ok and that he saves his brother. "Who's laugh do you think that was?", asked a scared Sero, "Not a good one I can tell you that", Death Arms said. "Let's just hope the next one isn't gonna scare us as bad, or at all", Nedzu said, trying to raise their spirits.

'Oh boy', Glowster thought with a sigh, knowing full well what's next, and they were in for something dark.

A/N: So yeah, Luigi's Mansion was the best I got, but don't worry, we all know the Green Thunder has more up his sleeve besides a vacuum. Lata'!