Balthazar is a character in Romeo and Juliet. He has a minor role, but you could argue that the entire tragic ending is all his fault. He's Romeo's servant, who he apparently trusts enough to tell him that he's married to Juliet. When Juliet takes the sleeping potion to make her appear dead, Balthazar runs away and tells Romeo that Juliet has died. Romeo then freaks out and kills himself in Juliet's arms. And as we all know, Juliet wakes up and then kills herself. Still a cool name, though--and besides; I'm sure that Shakespeare's poor Balthazar didn't intend to cause all this trouble. :)