Super Smash Bros. Invitation Letter - Guess Who Kirby Invited To Smash!!

but Kirby forgot to give him directions on the invitation letter so he ended up in Soulcalibur instead

Something like 20 characters in Ultimate's base roster have killed at least one God or comparably powerful being before. If Kratos could behave himself around the Kid Icarus crew, he might be able to share some good war stories.