Description
Devil May Cry VS Persona
*Individuals shrouded in mystery who are later revealed to be the split fragments of a far more dangerous being within their worlds that looks down upon humanity (Marie being part of Izanami and V being the split half of Vergil) tied closely to the silver haired protagonist the two would end up assisting on their own journey to stop the being tied to them (Marie assisting Narukami (who gained his powers from Izanami) in defeating Izanami, as well as both Sagiris, and V assisting Dante (Vergil's brother) in taking down the other half of Vergil, Urizen)
*Unlike their more monstrous halves, both strongly believe in humanity and see their potential
*Both eventually succumb to their fate though and return to their original incarnation (though Marie would at least be saved by Narukami and the gang. V... not so lucky)
*Both also specialise in using summons for combat (Marie using Personas, V using familiars). Also poetry addiction, that one is important.