Celebrity·Posted on Aug 27, 2014Here Is Matthew Lewis' Very Important ALS Ice Bucket ChallengeSPOILER: He is shirtless.by Mackenzie KruvantBuzzFeed StaffLinkFacebookPinterestTwitterMail This is Matthew Lewis. He played Neville Longbottom in Harry Potter and then won puberty and now is a hot guy who acts in stuff sometimes. Tap to play GIF Tap to play GIF Oh hey. Like all good guys, Matthew took part in the ALS Ice Bucket Challenge this week. But lucky for us he did it shirtless. View this video on YouTube Your turn, Felton.