here are pronouns for each one (because i forgot them)

Unfinished: he/him

Visalia: she/her

Ace: he/him

Finished: he/they

felix: he/him

p.s uh your able to do what you want with these characters except make them do or be inappropriate stuff so yes you don't have to ask for permission unless its something that you feel needs to be asked for ok uh idk what else to say