Aloysius Snuffleupagus, more commonly known as Mr. Snuffleupagus or Snuffy for short, is one of the characters on Sesame Street, a PBS/HBO educational television program for young children. His head bears resemblances to giant anteaters and mammoths, but he has no tusks or (visible) ears. He also has a tail similar in shape to that of a dinosaur. He has thick, brown hair and a trunk, or "snuffle", that drags along the ground. Snuffy is also Big Bird's best friend, and has a younger sister named Alice.

Big Bird is a Muppet character designed by Jim Henson and built by Kermit Love for the children's television show Sesame Street. An eight-foot-two-inch-tall (249 cm) bright yellow anthropomorphic bird, he can roller skate, ice skate, dance, swim, sing, write poetry, draw, and ride a unicycle. Despite this wide array of talents, he is prone to frequent misunderstandings, on one occasion even singing the alphabet as a single word. He would refer to grocer Mr. Hooper as "Mr. Looper", among other mispronunciations. He lives in a large nest behind the 123 Sesame Street brownstone and right next to Oscar the Grouch's trash can. In Season 46, the nest sits within a small, furnished maple tree, and is no longer hidden by used construction doors. He has a teddy bear named Radar.