Saint Danielle said:
A funny minific could be Izuku and his classmates discovering some kind of Council of Evil Deku's.
All of them assholes? Nah, a fanfic where Villain Deku is a whiny loser who no one takes seriously and gets his butt whooped easily sounds good/funny in small snippets, but in practice it gets stale fast. There are more funny and interesting ideas to be explored with this concept anyways.
Most of these villain Dekus should retain at least some part of the canon's morality/personality as they are the same person at the end of the day so most of them aren't going to turn to murder as their first option and are still polite. And they do suffer from internal division because many members have different end goals and moral codes that they follow but most of them are still villains at the end of the day and are completely aware of that (It's a requirement of joining the group to accept the fact you're a villain and responsible for your actions).
There are some actually good people there however like Robin Hood Villain Deku who's infiltrating the Council and giving intel to the heroes about the plans of some of his other counterparts as well as our lord and saviour comic book Supervillain Deku who's renounces the idea of killing and does "evil" deeds for his end goal of improving society and the heroes within it, he's cartoonishly evil but in a good way.
Even the less ambiguous members of the group can have some comedic elements tied to them such as Cyborg Villain Deku who makes constant Armstrong references which no-one gets, much to his frustration.
CV Deku "You can't hurt me Jack!"
Canon Bakugo: "For the last time, my name is not Jack!"
CV Deku "Seriously? Does none of you actually get my references?"
And if he ever meets someone who gets them:
Canon Kaminari "Okay, let's dance!"
CV Deku "YES! FINALLY! Thank you! I almost don't want to fight you but I'm getting paid a lot for this and they do have the only method of me returning home, sorry."
Then there's the interactions with the serious ones and goofy ones.
Villain Inventor Deku "Blast those heroes, someday I will have my vengeance!"
AFO Deku "Do you even know, why you want revenge in the first place? You never mentioned why to anyone, really."
VI Deku "Of course I know! It's because I- uh- why did I want revenge again?"
AFO Deku "Oh great I got stuck with a moron, as if this day couldn't get any worse!"
Supervillain Deku "Do not be discouraged my fellow evildoers, some day we shall triumph over those foolish heroes Mwahahahaha!"
AFO Deku "AND THEN THERE'S YOU! When I gave you that mind control quirk to fuse with your machine, I thought that you'd use it to make them fight each other! NOT THROW A LITERAL BOOGIE BOMB ONTO THE BATTLEFIELD AND FORCE ALL OF US TO SING A COORDINATED CRAPPY RENDITION OF WE ARE NUMBER ONE FROM LAZYTOWN!"
VI Deku: "I thought it was pretty good actually..."
Supervillain Deku "Aww, thanks you really know how to warm my heart my scientific friend
"
Skeleton Necromancer Deku "Nyehehehe, I bet my moves sent shivers, DOWN YOUR SPINE!"
AFO Deku "Ugh, again with the bone jokes. Is it customary for all skeletons to tell bad puns about themselves? Why didn't our leader grab an actual HUMAN instead of this clown."
SKD "Why of course! Sans and Brook have been working double time in our Skeleton puns club!"
Supervillain deku "Oh, oh! Could you teach me how to tell jokes like that too?! I'd love to improve my quip game."
AFO Deku "Please, whoever's up there in the sky, never let my universe learn of the utter humiliation I've had to experience here! It's complete and utter torture and I'm starting to regret all of my life choices!"
Supervillain Deku "(YES, THE PLAN TO MAKE HIM GIVE UP VILLAINY IS WORKING!)"
Some of the villain Dekus may defect and redeem themselves and live normal lives along the line as well.
Film producer "So let me get this straight you basically want to make a show where a bunch of aliens attack earth and the heroes have to fend for themselves using laser guns? Why?"
Random Villain Deku "The real question is, why wouldn't you want to see a film where heroes use sci fi technology, I'm thinking of having Mount Lady and Kamui play the protagonists to boost the buzz around the movie, Hollywood does LOVE hero couple rumors after all!"
Film producer "... You're going to go far in this industry kid."
Or
Daycare worker "Thank you for volunteering here dude, the kids seem to love you!"
Black Knight Deku "For years I let my past define me, causing me to tread down a path, cruel and callous. It is only now, thanks to these children that I have remembered the compassion that I once lost in my blind rage."
Child "OW! I scraped my knee on this rock!"
Black Knight Deku "*Unsheathes sword* Excuse me for a second, there's some rocks that I must crush into ashes."
Then there's still the infighting between the members of the group.
Half Skyrim Dragon Deku "I swear in the name of my father Alduin that I will destroy all worlds and the life that dwells within them!"
Skeleton Necromancer Deku "I'm afraid I can't have that, this world is mine to control with my skeleton army! Your HUBRIS is clearly showing, you're one of the only seven dudes here that want to destroy the whole world anyways Nyehehehe!
Cyborg Villain Deku "Do what you want, just so long as I get paid, I don't care, just don't expect me to kill any civilians or kids, okay?
Supevillain Deku "NO! We should strive to be better versions of ourselves, remember that we all agreed to spare All Might anyways!"
Broly Deku "ALLLLL MIIIIIIGHHHHT!"
"Dang it who used the A.M word?! I thought we agreed to never say that around this guy!"
"Yarr Don't look at me! I'm not the Bilge Rat who started this mess anyways!"
"Oh shut up NUMBSKULL!"
"What? You've got a bone to pick with him!?"
"Can someone PLEASE get him under control!"
"Hey get away from my crumpets, they're not yours!"
*Bickering ensues*
Fake Villain Deku "THAT'S ENOUGH!"
"But supreme leader I-"
FVD "Please everyone stop talking, how about we all grab some Katsudon and forget about this mess?"
"Oooh Katsudon!"
"Hell yeah!"
"Woohoo!"
"Can't say no to that!"
"I suppose the destruction of Earth may be delayed..."
Broly Deku "KATSUUUDOON!"
"Seriously dude?"
"Sorry I just got excited."
"Katsudon and Crumpets!"
*After they all leave*
FVD "Phew thank god I resolved that mess before HE found out, they should never know of his existence anyways. The knowledge that there exists a Deku that hates Katsudon would probably shatter reality as they all know it..."
Meanwhile at UA highRobot Bakugo "I am BAKATRON!"
Kirishima "HAHAHA!"
Robot Bakugo "What's so funny organic shitty hair!"
Bakugo "It's because your name sounds dumb, you rusty tin can of an imitation!"
Robot Bakugo "Why you! I'll crush you for saying that organic extra!"
Captain Underpants Deku "TRA LA LA! I must say that these two are a strange duo to say the least!"
Deku "Please! I beg of you get some clothes on, it's bad enough that there's so many versions of me running around, I don't need you ruining my reputation further okay!?"
Rich Ochako "Here have some spare hundred dollar bills, I have on hand. Honestly boys can be so weird can't they other me?"
*Notice Canon Ochako's tears*
"Other me, are you okay?"
Canon Ochako "N-no, no i-it's fine these are nothing b-but small drops, h-havefever, y'know? Totally not tears of bitterness! and jealousy"
Present mic "Hey Aizawa, are you sure you don't need my help dealing with the dudes from the other universes?"
Eraserhead "I'll be fine, now leave me to deal with these problem children."
"Oookay"
*Mic leaves*
Optimist Eraserhead "Hey there buddy! I look forward to working with you! Let's work together to help our lovely students reach the peaks of their infinite potentials!"
Eraserhead "Mic I take it back! I take it back! Please come back Mic! Mic!? MIC!? MIIIIIIIIIIIIIIIIIIIIIIIIIC!?
