Daniel Radcliffe to play Robert Pattinson on The Simpsons Twilight Spoof October 10, 2010 Will we be team Harry or team Ron? Daniel Radcliffe is to star in this year’s Simpsons Halloween special. Radcliffe will feature in the 21st edition of the series’ ‘Treehouse Of Horror’ series. The Harry Potter star will play a vampire called Edmund in a spoof of The Twilight Saga. (Imagine how confused teenage girls around the world will be). In the segment, titled ‘Tweenlight’, the mysterious Edmund attends Springfield Elementary and falls in love with good girl Lisa.