[@Yam I Am] Asking for input mostly because the two ideas are kind of similar, or liable to be played similarly.

The vampire I'm planning to kind of like Castlevania Dracula, practically a demon in human flesh. Legions of undead minions are his game, and he wants to darken the sun and enslave the world in his hellish reign. Pretty straightforward stuff.

The sorcerer I'm planning to be a very powerful mortal wizard that has enslaved demons to teach him their dark secrets and do his bidding. Besides that he's all about psychic torment, hellfire, a real flair for the dramatic. He's got kind of a psuedo Egyptian theme going, with like a snake/dragon motif. 

That last part said, I am considering mashing a dragon into either of these ideas. So a vampiric dragon Lord, or a chaos dragon disguised in human form. Up to you if you think this is a good idea, or if it's too much.