GLaDOS 

Chell and that British Core 

Sans & Papyrus

you dont have any eneimes at least... not yet

Untitled Goose

everyone and everything

Wilson

Maxwell... just Maxwell.

Mae

yourself... dont ask.

Cuphead/Mugman

well if you'd think it was devil or king dice, absolutely wrong its Wally Jr. he stole your effn garlic bread.

Phoenix Wright

you dont have any enemies except Payne, screw payne.also Mile's sister you dont exactly like her eaither, she whiped your arm had whiplash for a week.

BATIM

you have beef with the bucher gang, doesnt mean their your enemies your actual enemy is the theme park, mostly bertrum's ride because it took your "area"

Valentine

you dont really know any enemies except for the skullgirl your mom and Painwheel talk about. 

Ms. Fourtune

the Medihis, you stole a LOT of carp from them, not that it benefited you in anyway you were just being you. and trying to survive.

Painwheel

skull girl, plain and simple.

Big Band(W/ peacock)

youre not sure if you have any enemys maybe some of Peacock's gangs because they get you in trouble 60% of the time

 Filia

Webby, just... Webby... and anyone who harrasses your mom and Samson.