I was kind of hoping you would be one of the foreign, "evil" vampires (Magpyr), dammit.
A quick bio for the uninitiated: Otto is a vampire who lives in Ankh-Morpork. He's a Black Ribboner (i.e. doesn't drink human blood), and his substitute obsession is photography. He's generally a nice guy- he works at the newspaper the Ankh-Morpork Times. Otto has been a character in Ankh-Morpork since the book "The Truth."
Some interesting potential roles here, but really he could be anything, since Isaac seems to like having "variations" on characters. (For example, in the Dresden Files game, Molly Carpenter had a chance to be either good or evil).
That is, while Otto doesn't suck blood in the books, it IS a possibility that he does in this game.
I'll hold off on voting for now, since I'm apparently the only one who supports the "stake now, sort it out later" approach, but does anyone have anything to add to this?