Off the top of my head, in the order of most frequently played, I can offer up:


The Vampire Diaries/The Originals: Klaus, Stefan, and Alaric (Also, but not played as often: Kol, Marcel, and Elijah).

Teen Wolf: Jackson, Liam, potentially Scott and Theo once I stop being lazy and actually set up their journals...

True Blood: Alcide, Eric, Sam, Hoyt, Claude (But this canon is harder to mesh with others without serious tweaks).

Plus some random guys like Jake from The Secret Circle (TV), Caleb from The Covenant, some Blade vamps, etc.


I've done some crossover stuff into Teen Wolf with The Vampire Diaries and The Secret Circle so far and they've worked out well.