Lady Moldoma
Professional Sweetypie
Most of my OCs I can see definitely getting overwhelmed or removing themselves.we also have to keep in mind that hero schools won't be an exact one for one. they go by the rules and because of this, they are probably altogether better fighters and smarter when it comes to things like tactics and making reads on their enemies' moves. because, i picture the hero schools to be more lawful and Booksmart where evil generally tends to be more chaotic and rebellious. i've seen a few shows that have this similar premise and the evil people are taken aback when they get their butts kicked by the hero students because there's the stereotype that good guys are pushovers and afraid of confrontation. but in actuality the hero students turn out to be douches because they are, in generally, better than the other side due to actually paying attention in school and practicing what their taught instead of doing things like ditching class and doing what bad people do.
just my thoughts
I say most, because there's the exception of Mamimi, who is basically the villainous manifestation of Shonen Protagonist Syndrome, and is my personal rage-based narrative blunt-instrument. She'll "Row Row Fight The Power" so hard that she'll probably have to be nullified by some opponent student with like, a Dimensional Trap ability, and even then, she'll probably just end up breaking out of that like an arc later.
And there's also Remina, who does have that same sort of training if not greater since she comes from a warrior race, and has been conquering planets since she was biologically 7 (which was probably 150+ of our gregorian years ago.) She didn't get sent to Tudor Lestrange to learn anything new about villainy.
But as for Peppermint Dreadful and Bullette, they'll probably put up at least a good fight but end up overwhelmed in the end or shortsighted by another student of tudor.
If it comes down to it, though he rarely ever fights personally, Domineuse is also insanely good at villainy since he basically denies or inverts every single villainous trope and plays as dirty as you can get to win. But he honestly strikes me as the kind of guy to elect to tactically retreat from a conflict if he perceives that it's not in his favor.
Ulbert is probably just going to stay in his library. He really couldn't care either way. Heroes could completely take over the school and as long as they don't fuck with his books he'd treat it like any other tuesday.