Seth Benjamin Green (born Seth Benjamin Gesshel-Green) is an American actor, producer, writer and director. He is known as a co-creator, executive producer and the most frequent voice on Adult Swim's Robot Chicken, directing its Star Wars and DC Comics specials. Green has appeared in the films Radio Days, Rat Race, My Stepmother Is an Alien, Airborne, the Austin Powers series, Can't Hardly Wait, The Italian Job, Scooby-Doo 2: Monsters Unleashed, Without a Paddle and The Lego Batman Movie. He is also known for his roles as Daniel "Oz" Osbourne on Buffy the Vampire Slayer and Angel, voicing Chris Griffin on Fox's Family Guy, Joker in the Mass Effect video games, as well as Howard the Duck in the Marvel Cinematic Universe films Guardians of the Galaxy and Vol. 2, in the Disney XD animated series Guardians of the Galaxy and Ultimate Spider-Man, and in the Disney+ animated series What If...? In 2019, he released his first film as writer and director, titled Changeland.