Title: Peter Griffin
Content:   The voice of Peter is provided by MacFarlane, who also provides the voice for Brian, Stewie, Quagmire, Tom Tucker, Carter Pewterschmidt, and Dr. Hartman, and others. MacFarlane has been part of the main voice cast from the beginning of the series including the pilot, and has voiced Peter from the start. MacFarlane chose to voice Peter and several other characters himself, believing it would be easier to portray the voices he already envisioned than for someone else to attempt it. MacFarlane's speaking voice is not very close to Peter's; he uses his normal voice as the voice of Brian. MacFarlane drew inspiration for the voice of Peter from the 
Title: Griffin family
Content:  Peter Griffin, voiced by Seth MacFarlane. Peter is the father of the Griffin family, a stereotypical blue-collar worker. Leader of the Griffin family, he is Irish-American Catholic. Peter is also an obese and bespectacled man who is just a big child. He has other roots beside his Irish ones, including African American, Spanish, Scottish and German. In an interview with The Advocate, MacFarlane described him as "Archie Bunker without the knowledge of what he's doing. He has the mind of a child, basically, and a source of big laughs is when he does not realize he's doing something inappropriate." In the season four episode "Petarded", Peter takes an IQ test, and discovers that his low intellect places him in a category slightly below mentally retarded, but higher 
Title: Griffin family
Content:  MacFarlane voices three of the show's main characters, Peter Griffin, Brian Griffin and Stewie Griffin. He has stated that he already knew what kind of voice he was looking for the main characters so it was easier to do it himself. Peter's voice is inspired by the voice of a security guard MacFarlane overheard talking while attending the Rhode Island School of Design. Stewie's voice was based on the voice of English actor Rex Harrison, particularly on Harrison's performance in the 1964 musical drama film My Fair Lady. Brian's voice is MacFarlane's regular speaking voice. In addition MacFarlane provides the voice of various recurring and one-time characters, most prominently those of the Griffin's neighbor Glenn Quagmire, 
Title: Peter Griffin
Content:  to Lois Griffin and is the father of Meg, Chris, and Stewie. He also has a dog named Brian, with whom he is best friends. He has worked at a toy factory and at Quahog's Brewery. Peter's voice was inspired by the security guards that MacFarlane heard at his school. His appearance was a redesign of the protagonist Larry from MacFarlane's previous animated short films The Life of Larry and Larry & Steve. He has appeared in several pieces of Family Guy merchandise, including toys, T-shirts, and video games, and he has made crossover appearances in other shows, including The Simpsons, Drawn Together, American Dad!, and Family Guys spin-off series The Cleveland Show.
Title: Peter Griffin
Content:  do it himself. In another interview, he mentioned that Peter's voice is one of the most difficult to do. There have been several occasions where MacFarlane does not voice Peter. In the episode "No Meals on Wheels" (season 5, 2007), actor Patrick Stewart voiced Peter in a cutscene, but MacFarlane voices Peter for the rest of the episode. In the episode "Family Gay" (season 7, 2009), Seth Rogen provided a guest-voice as Peter under the effects of the "Seth Rogen gene". In "Road to the Multiverse" (season 8, 2009), he was voiced by actor Jamison Yang, who was required for a scene where everything in the world was Japanese.
Title: Peter Griffin
Content:  Peter Löwenbräu Griffin 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". Peter is 
Title: Peter Griffin
Content:  guards he overheard talking while he was attending the Rhode Island School of Design; according to him, "I knew a thousand Peter Griffins growing up in New England. Guys who would not think before they spoke, like [switching to Peter's voice] there was no self-editing mechanism. [Pointing to himself] Everything in here, [pointing to his front] it's coming out here, with no gateway". MacFarlane also voices many of Peter's ancestors who share the same type of voice. He noted in an interview that he voices Peter and the rest of the characters partly because they initially had a small budget, but also that he prefers to have the freedom 
Title: Family Guy
Content:  voices for various other recurring and one-time-only characters, most prominently those of the Griffins' neighbor Glenn Quagmire, news anchor Tom Tucker, and Lois' father, Carter Pewterschmidt. Alex Borstein voices Peter's wife Lois Griffin, Asian correspondent Tricia Takanawa, Loretta Brown, and Lois' mother, Babs Pewterschmidt. Borstein was asked to provide a voice for the pilot while she was working on MADtv. She had not met MacFarlane or seen any of his artwork, and said it was "really sight unseen". At the time, Borstein was performing in a stage show in Los Angeles. She played a redheaded mother whose voice she had based on 
Title: Griffin family
Content:  Brian Griffin, voiced by Seth MacFarlane, is the Griffin family's pet dog. Brian has lived with the Griffin family since Peter picked him up as a stray. Peter is his best friend, despite Brian's superior intelligence. Brian is often the voice of reason for the family, frequently reminding Peter how stupid or corrupt his ideas are. He also has a very close friendship with Stewie, and the two of them have been at the center of some of the most critically acclaimed episodes during the series, most notably the Road to... episodes. Seth MacFarlane has once described Brian as "a dog who has a wit as 
Title: Griffin (surname)
Content: The Griffin family of Family Guy: ; Peter Griffin, father ; Lois Griffin, mother ; Meg Griffin, daughter and oldest child ; Chris Griffin, older son ; Stewie Griffin, younger son ; Brian Griffin, anthropomorphic pet dog ; Francis Griffin, Peter's (adoptive) father ; Thelma Griffin, Peter's mother ; Karen "Heavy Flo" Griffin, Peter's sister ; Griffin (The Invisible Man), fictional character in H. G. Wells's The Invisible Man, first name Jack only in film versions ; Judge Jürgen Griffin, a character in the Judge Dredd comic strip ; Henry Griffin, a character in The O.C. ; Kylie Griffin, a character in Extreme Ghostbusters and in the IDW Ghostbusters comic series ; Ric Griffin, a Holby City character played by actor Hugh Quarshie ; Sandi Griffin, a character in the animated series Daria ; Clarke Griffin, a character in The CW network series The 100 ; Arthur Griffin, a secondary character in American television series Big Time Rush ; Hawley Griffin, a character from The League of Extraordinary Gentlemen 

Question: who does peter griffin voice?
Answer: Seth MacFarlane.