Ugh...
You know what I'm thinking? Simon Belmont. Really, any other Belmont might do. Even Alucard.
Think like this:
His B-moves are different subweapons; down for holy water, side for boomerang, and the knife as the standard B. B and up would be the Super Jump. His Final Smash would be the Holy Cross from SoTN (or the Hydro Storm item crush,) and he'd use the Vampire Killer for grab moves and as a grappling hook.
As for Alucard, B and up would transform him into a bat and give him similar flight capabilities to Pit using his silver wings, down would use (again) Holy Water (although different from Simon's in that his holy water stays in place in a way similar to Ness' PK Fire,) side would produce Hellfire, and the standard B would cast Summon Spirit, with the number of spirits produced varying with the amount of time between uses. His final smash would either be Soul Steal or the Heavenly Sword (or whatever's) special attack, where it sends swords just flyin' everywhere like crazy.