Big Bird is the ultimate main protagonist of Sesame Street franchise. He is a tall 5-year-old bird muppet from Sesame Street, a supporting character in the show's first ten seasons, the main protagonist of both the show's next 20 seasons and the full length feature, Follow that Bird, a major character in the show's next 8 seasons, the tritagonist from Season 24 to present and a supporting character from The Adventures of Elmo in Grouchland. Big Bird loves to sing and hum songs, tell stories, make friends and teach things to children. He loves his teddy bear called Radar, and his best friend is Snuffy, a brown hairy snuffleupagus.
True to his name, Big Bird is an inexplicably large, yellow bird, perpetually stuck at age 6. Mr. Snuffleupagus is his best friend. He lives in a nest near the apartments.
Despite his gentle size, Big Bird stands out at being very sweet and caring, always trying to help others. However, he has a hard time standing up for himself - he once let Humphrey and Ingrid talk him into giving Radar to Natasha, and he would have lost his nest to Minnie Myna if Chris hadn't helped him.