A ghost that killed millions of evils in millions of universes, has a shotgun with infinite ammo and a power that heals himself

I was bored until I saw too less Self Paced Talkies, so I fixed that issue with this Characters: Pace (My theory is that Pace is a girl that sounds a little bit like a boy) Brains Brawn Chef Eggman (I can NOT type the original name because it’s weird and hard to say) Shadow (Bad guy) and Rosy