Edmund

Edmund is a young vampire who appeared in the episode Treehouse of Horror XXI during the segment "Tweenlight", as Lisa's crush and boyfriend.

Behind the Laughter
He is a parody of Robert Pattinson's portrayal of Edward from the Twilight saga. He is voiced by Daniel Radcliffe, who is the who plays the eponymous character from the Harry Potter movies. It should be noted that both Radcliffe and Pattinson stared alongside each other in the fourth Harry Potter film "Harry Potter and the Goblet of Fire" with Pattinson playing fellow student Cedric Diggory.