"Victory shall be mine!" Stewie's catchphrase Stewart Gilligan "'Stewie" Griffin is the secondary protagonist and one of the six main characters of the animated series Family Guy And In The Fan Game Angry Birds: Reimagined voiced by Seth MacFarlane. Once obsessed with world domination and matricide, Stewie is the youngest child of Peter and Lois Griffin. His older siblings are Chris and Meg. Stewie is considered to be the show's breakout character. Wizard magazine rated him the 95th greatest vil