Title: Stewie Griffin
Content:  Stewart Gilligan "Stewie" Griffin is a fictional character from the animated television series Family Guy. He is voiced by series creator Seth MacFarlane, and first appeared on television, along with the rest of the Griffin family, in a 15-minute short on December 20, 1998. Stewie was created and designed by MacFarlane himself, who was asked to pitch a pilot to the Fox Broadcasting Company, based on The Life of Larry and Larry & Steve, two shorts made by MacFarlane featuring a middle-aged man 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". A highly precocious toddler who talks and acts as an adult, Stewie began the series as a megalomaniacal 
Title: Stewie Griffin
Content:   Stewie's voice is provided by Family Guy creator Seth MacFarlane, who also provides the voices of Brian Griffin, Peter Griffin, and Glenn Quagmire as well as numerous other characters. MacFarlane based Stewie's accent on the voice of English actor Rex Harrison, particularly on Harrison's performance in the 1964 musical drama film My Fair Lady, with further influence coming from The Simpsons character Mr. Burns. MacFarlane has stated that his inspiration for the Stewie name was a car owned by Stan Lee. MacFarlane has also linked Stewie with David Hyde Pierce on more than one occasion, saying he wants Pierce to play Stewie if a live action version of the show would ever be created. Stewie's head has the shape of a rugby ball. In the episode "Stuck Together, Torn Apart", a cutaway shows Stewie's head to be normally shaped, until he hits it on the ceiling while bouncing on the bed, and it is elongated into the familiar shape. Flashbacks in "Chitty Chitty Death Bang", however, show his head was already shaped like a football when he was born.
Title: Family Guy
Content:  Seth MacFarlane voices three of the show's main characters: Peter Griffin, Brian Griffin, and Stewie Griffin. Since MacFarlane had a strong vision for these characters, he chose to voice them himself, believing it would be easier than for someone else to attempt it. MacFarlane drew inspiration for the voice of Peter from a security guard he overheard talking while attending the Rhode Island School of Design. Stewie's voice was based on the voice of English actor Rex Harrison, especially his performance in the 1964 musical drama film My Fair Lady. MacFarlane uses his regular speaking voice when playing Brian. MacFarlane also provides 
Title: List of Family Guy characters
Content:  Stewart Gilligan "Stewie" Griffin (voiced by Seth MacFarlane) is the Griffins' infant child, but often behaves in adult ways such as speaking in an affected upper-class British dialect.
Title: Stew-Roids
Content:  "Stew-Roids" is the 13th episode in the seventh season of the American animated television series Family Guy. It originally aired on the Fox network in the United States on April 26, 2009. The episode features Stewie after he is attacked at an outdoor party by Joe's infant daughter, Susie. While training Stewie, Peter injects him with performance-enhancing drugs, and Stewie becomes incredibly muscular. Meanwhile, Chris becomes the fake boyfriend of popular student Connie D'Amico. He begins to like her, and the two begin a serious relationship, leading him to become popular. After a matter of time though, his newfound popularity goes to his head, causing him to become mean and self-centered towards everyone around him. The episode was written by Alec Sulkin and directed by Jerry Langford. It received mixed reviews from critics for its storyline and many cultural references, in addition to receiving criticism from the Parents Television Council. According to Nielsen ratings, it was viewed by 6.80 million viewers on its original airdate. The episode featured guest performances by Wilhoit, Meredith Baxter-Birney, Jeff Bergman, Gary Cole, Chace Crawford, Camille Guaty, Wentworth Miller and Mae Whitman along with several recurring guest voice actors for the series.
Title: Go, Stewie, Go!
Content:  "Go, Stewie, Go!" is the 13th episode of the eighth season of the animated comedy series Family Guy. It originally aired on Fox in the United States on March 14, 2010. The episode features Stewie after he auditions, cross-dressed under the pseudonym Karina Smirnoff, for a female role in the American version of Jolly Farm Revue, and eventually ends up falling in love with a female co-star on the show. Meanwhile, Lois finds herself attracted to Meg's surprisingly normal boyfriend, once Peter causes her to realize her advancing age. The episode was written by Gary Janetti and directed by Greg Colton. It received mixed reviews from critics for its storyline and many cultural references, in addition to receiving criticism from the Parents Television Council. According to Nielsen ratings, it was viewed in 6.72 million homes in its original airing. The episode featured guest performances by Stephen Bishop, Mo Collins, Colin Ford, Lucas Grabeel, Anne Hathaway, Nana Visitor and Mae Whitman, along with several recurring guest voice actors for the series. "Go, Stewie, Go!" was released on DVD along with ten other episodes from the season on December 13, 2011.
Title: Send in Stewie, Please
Content:  "Send in Stewie, Please" is the twelfth episode of the sixteenth season of the animated sitcom Family Guy, and the 301st episode overall. It aired on Fox in the United States on March 18, 2018 with limited commercial interruption due to its runtime of 25 minutes, and is written by Gary Janetti and directed by Joe Vaux. The episode largely focuses on Stewie Griffin (voiced by creator Seth MacFarlane) about his major secrets, accompanied by a child psychologist (voiced by guest star Ian McKellen). None of the Griffin family appear except Brian at the very end, and no cutaway gags accompany the extended runtime. In addition, this episode was commercial-free so that Fox could promote the 2018 God of War video game.
Title: List of Family Guy cast members
Content:  Seth MacFarlane voices four of the show's main characters: Peter Griffin, Brian Griffin, Stewie Griffin, and Glenn Quagmire. MacFarlane chose to voice these characters himself, believing it would be easier to portray the voices he had already envisioned than for someone else to attempt it. MacFarlane drew inspiration for the voice of Peter from a security guard he overheard talking while attending the Rhode Island School of Design. Stewie's voice was based on the voice of English actor Rex Harrison, especially his performance in the 1964 musical drama film My Fair Lady. MacFarlane uses his own voice while portraying Brian. MacFarlane also provides the voices for various other recurring and one-time only characters, including news anchor Tom Tucker, Lois' father Carter Pewterschmidt and Dr. Hartman. He explained on the Graham Norton Show that the voice for Glenn Quagmire is based on 1940s and 1950s radio commercials. He is the only cast member to be in every episode.
Title: Chap Stewie
Content:  "Chap Stewie" is the twenty-first episode and season finale of the twelfth season of the animated comedy series Family Guy and the 231st episode overall. It aired on Fox in the United States on May 18, 2014, and is written by Artie Johann and Shawn Ries and directed by Joe Vaux. In the episode, Peter and Chris ruin Stewie's TV time, prompting him to get revenge by travelling back in time to split Lois and Peter up so he is never conceived, but the plan goes awry when he is reborn into a British household similar to the ITV period drama Downton Abbey.
Title: Stewie Kills Lois and Lois Kills Stewie
Content:  Family Guy episodes. A spokesperson for Fox said: "Our hope is that he returns to work and completes his non-writing obligations on those episodes". Fox aired two new episodes during November 2007. The following episode, "Padre de Familia", was the first of these two episodes to air. The strike ended on February 12, 2008 and the series resumed airing regularly. In addition to the main cast, actors Patrick Stewart and Phil LaMarr, and American Idol judges Simon Cowell, Randy Jackson and Paula Abdul guest starred in the episode. The episode also featured the recurring voices of actress Jennifer Tilly and Patrick Warburton, and writers Danny Smith and John Viener in minor appearances. Future showrunner Mark Hentemann also made some appearances.

Question: who does the voice of stewie family guy?
Answer: Seth MacFarlane.