Stewart Gilligan Griffin is an animated fictional character from the television series Family Guy. He is the youngest member of the Griffin family and as indicated by many episodes, he is the only biological child of Peter Griffin and Louis Griffin. He is affectionately called Stewie by his family and friends. He has two siblings a brother named Chris and a sister named Meg. The family also has a pet dog called Brian. His character is voiced by the creator of the show, Seth MacFarlane.
Stewie is an infant with a super-genius IQ and speaks with an English accent though he is American. According to the creator of the show, Seth MacFarlane, Stewie’s devilish character is the direct result of Louis smoking Marijuana whilst she was pregnant. His dastardly objectives include taking over the world and matricide. Although, Stewie unwillingly concedes to the fact that his existence is totally dependant on Louis, he believes that getting rid of her for good, will free him from the current state of affairs which he absolutely hates. He is a child with childish desires and is at times fascinated by the simplest of things such as his affection for his teddy bear Rupert. Stewie also has a classy attitude and stylish persona which is contradictory to his childish behaviors. He is not known to refer to his parents as mom and dad but calls them ‘Louis’ and ‘The Fat Man’ instead. He is fascinated by the banjo and describes it as "a magical device that produces dulcet tones that are the music of angels. Stewie is also known to suffer from an anti-social personality disorder and may also have megalomania and acute paranoia.
The creator of the show Seth MacFarlane has said that Stewie’s character is highly influenced by British actor Rex Harrison. He describes Stewie as "Rex Harrison in an infant's body". | 
