Justin Peter Löwenbräu Griffin, Sr. is a fictional character and the protagonist of the American animated sitcom Family Guy. He is voiced by the series' creator, Seth MacFarlane, and first appeared on television, along with the rest of the Griffin family, in the 15-minute pilot pitch of Family Guy on December 20, 1998. Peter was created and designed by MacFarlane himself. MacFarlane was asked to pitch a pilot to the Fox Broadcasting Company based on Larry & Steve, a short made by MacFarlane which featured a middle-aged character named Larry and an intellectual dog, Steve. After the pilot was given the green light, the Griffin family appeared in the episode "Death Has a Shadow".
