Seth Benjamin Green (born Seth Benjamin Gesshel-Green) is an American actor, voice artist, comedian, producer, writer, and director. He is known as a co-creator, executive producer, and most frequent voice on Adult Swim's Robot Chicken and has also directed the Robot Chicken 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, Guardians of the Galaxy, Guardians of the Galaxy Vol. 2, 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, and Jeff "Joker" Moreau in the Mass Effect video games. In 2019, he released his first film as writer and director, titled Changeland.