Master Billy Quizboy, born William Whalen, is one of Dr. Venture's friends on The Venture Bros. Billy still considers himself a child genius, though he's neither a child nor that much of a genius. Billy owns a company, Conjectural Technologies, with his good friend Mr. White.
Dr. Venture: Billy, fess up to the boy. He's been pulling that "boy genius" crap for at least the twenty years that I've known him.
Billy Quizboy: Well, nobody's really impressed with "Master Billy Quizboy, Adult Genius."
Dr. Venture: Like a speech impediment and growth hormone deficiency qualifies you as a "boy genius."
Mr. White: Don't forget the huge head.
Billy Quizboy: I copped to it - now you guys are ganging up on it
Billy Quizboy: You should be good as new, maybe even better - I hooked you up with the "complete package," if you know what I mean.
Dean: I don't.