He is a heavy, obese man who weighs about 270 pounds and stands 6 feet tall. Peter has short brown hair, a large cleft chin, and round glasses. He stands tall and wears a simple everyday outfit. Peter is the husband of Lois Griffin. Peter, known for his dim-witted, impulsive, and often crude behavior as the patriarch of the Griffin family in Quahog, Rhode Island. He is married to Lois, has three children (Meg, Chris, and Stewie), and is best friends with the family's talking dog, Brian, often getting into absurd, over-the-top adventures driven by his poor judgment. He is 45 years old.

Lois is a tall, fair-skinned woman with short orange hair. She wears a teal button-up shirt, tan pants, and dark earrings. She is the wife of Peter Griffin. 5 feet 8 inches tall with a slender, hourglass shape. She has her short orange hair styled in a bell-shaped bob cut. Has green eyes, red lipstick, and dark blue or blue pearl earrings. Often tries to manage her dysfunctional family, but is prone to severe midlife crises, violent outbursts, and hidden malicious streaks. Values high art like playing the piano, speaks with a New England accent, and possesses unexpected physical or social dominance. She is 43 years old.

His real name is Christopher, but everyone refers to him as Chris. He is the middle child / brother of his siblings, Meg and Stewie. He wears a plain blue t-shirt, dark pants (black or dark grey), and white sneakers with red stripes. He almost always wears an orange baseball cap with a black back. He is an overweight teenage boy standing at 5'5 feet tall with shaggy blonde hair, facial features similar to his father Peter, and a signature casual outfit. He is often slow-witted and naive, struggling to grasp basic concepts or social cues. Struggles deeply with self-confidence around girls, maturing, and his body image. Unlike other family members, he lacks malice and generally treats people with sweet enthusiasm. is a simple-minded, good-natured, and awkward teenager. He shares his father Peter's lack of high intelligence and weight insecurities, but remains a kind-hearted, innocent, and creative member of his family. He is 15 years old.

Peter stupidly changed her name to Megatron as a infant, but she makes the best of it and likes to say that her real name is Megan, everyone refers to her as Meg. She is the daughter of Peter and Lois, and the big sister of Chris and Stewie. Meg is a short teenage girl with a somewhat heavy, masculine build, short brown hair, and a triangular-shaped nose and head. She wears a signature pink beanie, thick glasses, a pink shirt with a white collar, blue jeans, and white shoes. Wears thick prescription glasses due to nearsightedness (myopia). Has a short stature, standing around 5 feet 2 inches tall. Constantly worried about her appearance and social standing. Harboring deep anger from continuous mistreatment, occasionally culminating in explosive psychological breakdowns or violent outbursts. She is 18 years old.

He is an anthropomorphic, white-furred Labrador retriever who walks on his hind legs, uses his front paws as hands, and wears a red collar with a golden tag. He has clean white fur, a large snout, and a black nose. He was taken in by the Griffin family and was signed off on into the family by Peter Griffin. He has a very close bond with Stewie Griffin, and they are best friends, even being told by Stewie himself that he is more of a father than Peter had ever been. He'll be seen calling Stewie 'Stew' here and there to signify their close relationship for one another. He is standing at around 4'5 feet tall. His best friends are Peter and Stewie, though, he is closer to Stewie. Brian is a story writer and likes writing comics or stories on his laptop to post, though they aren't very popular. He is 10 years old, specifically in dog years. (Late 60s for anyone wondering)

His full name is Stewart, but everyone refers to him as Stewie. He is the baby brother of his siblings, Meg and Chris. He wears a plain bright yellow short-sleeved shirt, bright red overalls or dungarees, and simple light blue booties or shoes. He is known for his advanced vocabulary, British accent, and dynamic character growth from a violent villain arc to a more eccentric, complex individual as he evolved as a person. Grew to show vulnerability, vanity, and emotional depth rather than pure malice after Brian came into his life, they are very close, and deep down, Stewie really values their friendship. He calls Peter 'The Fatman' more than 'Dad' because it shows how little he feels that Peter understands him. He tends to call Brian 'Bri', using a nickname to subtly represent their deep bond. (Pronounced "Bry" for people wondering, it rhymes with "fry") This gadget-loving toddler stands at 2'7 feet tall, obviously because he was a toddler and has a brown and white plush bear that he absolutely adores named 'Rupert'. He is 1 years old.