These battles feature long strings of action film-style sequences, with explosions, high-speed chases, and excessive collateral damage to both property and innocent bystanders, ending with Peter the victor leaving the giant chicken for dead, only for a sudden movement to show that the chicken is still alive. The feud began over a trivial incident where the chicken gave Peter an expired coupon at the grocery store.

Meg explains in "A Fistful of Meg" that her father changed her birth certificate to "Megatron" after her mother had already selected Megan.

In "Emission Impossible", it is revealed that Chris was born as an accident, due to a broken condom. As a result, Peter and Lois filed a lawsuit against the company and bought the house they currently live in.

Cleveland used to be an accomplished auctioneer, but was struck in the head by a totem pole, which resulted in his speech being permanently slowed.

Brian Griffin is an 8-year old talking white Labrador. He has a cultured background, loves opera and jazz, and is a fan of John Coltrane.

West can only be activated by the phrase "Gosh, that Italian family at the next table sure is quiet".

In "Blind Ambition", the bar burns to the ground when God tries to impress a woman by lighting her cigarette with a thunderbolt.

In "Don't Be a Dickens At Christmas", Chris is revealed to have had a stillborn twin that Lois planned to name "Tmas".

Peter and Lois have three children: Chris, Meg, and baby Stewie. After a mix up at a sperm bank, Peter also became the biological father of Bertram. Previously due to selling sperm to raise money for dial-up modem impression lessons, he also found himself the father of many other children.

In "McStroke", after eating thirty hamburgers in one sitting, Peter suffers a stroke that paralyzes the left side of his body. For the next three months he walks with a limp. His arm and leg hang lifelessly from his body, and his eye and part of his mouth slide down his face, giving him a speech impediment. This damage is reversed completely after a five minute session at a stem cell research facility.