Baby Sinclair is the youngest member of the Sinclair family in Dinosaurs, the 1990s television sitcom about a family of dinosaurs living like a modern suburban household. His loud, demanding personality made him the show's breakout character, and short clips of his singing and driving moments have since circulated widely on TikTok and Instagram Reels. Creators keep reusing him because the contrast between a tiny baby and adult behaviour is instantly funny, even for viewers who never watched the original series.