I'm thinking:

Gaster/Sans: Zoner (Tanky/Glass Cannon)

Frisk: Dodging/Low ATK

Mettaton: Tanky/Transform

Papyrus/Undyne: Grapple

Chara: Up close, high ATK

Toriel/Asgore/Asriel: Jack of all trades

Flowey: ???

IF YOU HAVE ANY SUGGESTIONS THEY WOULD BE APPRECIATED ALSO IF YOU WANT CERTAIN CHARACTERS TO BE IN LEMMIE KNOW

@thatdelphox gotta have Muffet in there somehow

and Monster Kid so you can have the satisfaction of beating the everloving crap out of them if that would be cathartic

@kara ooooooh true.

Also Muffet is the best

@thatdelphox and Mad Dummy

with KNIVES

@kara MAD DUMMY

Also maybe the Ruins Dummy?

@thatdelphox tuTORIEL mode

@kara HOW TO PLAY, with Toriel

@thatdelphox Toriel would be all assurances that really you're not _actually_ hurting anyone and this time it really IS just as harmless game and it's okay you can attack her if you like and there will be pie afterwards

@kara Honestly, I still need to figure out some reason how no one is /actually/ getting hurt, but that’s pretty great tbh

@thatdelphox it's VR

Alphys invented it

@thatdelphox (or if you wanna _really_ get wild and weird, Frisk is resetting every time, special dispensation from the Undertale gods to use this power for good)

@kara I like that one a lot actually.

Still weird timey-wimey things I gotta figure out, but that’s a good one

@thatdelphox like. if you wanted to get a _little_ grim with it, not too bad, still within my range of what I think is acceptable to do with the characters I love so much

you could posit that this is a necessity, like, the monsters realize that they might have to fight humans again, so they're training up

and after much agonizing they've decided, OK, Frisk, we will trust you to use your reset wisely for _just_ this purpose

it would be the ultimate gesture of trust in a human

@kara Actually, I like this a whole lot tbh? Only issue with this one is no one remembers after resets.

Maybe “something something Gaster and Alphys and Sans something something”

But otherwise I’m totally here for this one