Seth Benjamin Green (born Seth Benjamin Gesshel-Green; February 8, 1974) is an American actor, voice actor, comedian, television producer, television director and screenwriter. Green is the creator and executive producer and most-frequent voice on Adult Swim's Robot Chicken, where he is also a writer and director. He directed many of the Robot Chicken specials including Robot Chicken: Star Wars and DC Comics Special. He has starred in the feature films, Airborne, The Italian Job, Party Monster, Can't Hardly Wait, Without a Paddle and all three Austin Powers films, among many others. He is also well known for his role as Chris Griffin on Fox's Family Guy and previously as Daniel "Oz" Osbourne in Buffy the Vampire Slayer, and Greg the Bunny. He also voices Lieutenant Gibbs in Titan Maximum and Jeff "Joker" Moreau in the Mass Effect video game series. Green has appeared in many other movies, such as Rat Race, America's Sweethearts, Old Dogs and as a child in Woody Allen's Radio Days, and in the horror films Idle Hands and Stephen King's It.