Arryn could absolutely rock a Bayonetta cosplay, though she'd need very tall heels to make up for the fact that she isn't 6'10. The fact I picked Hellena Taylor aka Bayo's VA for Arryn's voice claim does help.

Avian, slap a wig on him and he could make a convincing Cloud, however Ren Amamiya the MC of Persona 5 and all his outfits would be the best cosplay. Yes even the prison warden crossdressing, Avian is very slender.