If it's a character that's not based on the original Drac though, then it just happens to be a totally different guy by the name of Dracula. This goes for the DMC characters, for example, Dante, Vergil and Mundus can be discussed.
But yeah I'm not familiar at all with CastleV, I have short break and don't feel like looking anything up, so I'll guess you're right about that.
Yeah that's what I mean, if they're not swaps (like Darth Vader and The DC characters/Marvel characters in crossovers) then they're ok...much like some of the fiends in Ninja Gaiden. Alma and Zedonius are somewhat based on mythological beings but it doesn't make them identical to whatever that didn't originate in a game. So, we could say they just happen to have the same name.
And Kain wins. He's the best vampire eva.