A colored version of Loona the Hellhound from Helluva Boss cosplaying as Miriam the Shardbrinder and protagonist of Bloodstained: Ritual of the Night (and Curse of the Moon 1+2). Why, because they share the same voice actor Erica Lindbeck whom is my new favorite voice actor as of late.

It may seem weird though that Loona's a Hellhound and Miriam normally hunts demons/monsters in her games, but demons generally murder each other in Helluva Boss from what I've understand, so it's okay.