What is the name of the two-headed monster that appears on Sesame Street?

The two-headed monster on Sesame Street is the Two-Headed Monster. This light-purple Muppet is a single character with two heads, two distinct personalities, and a shared body that must coordinate every movement.

The Two-Headed Monster first appeared in 1978 during Sesame Street’s ninth season. The character grew out of performers Jerry Nelson and Richard Hunt joking around on the set as a monster with two heads. Its design was created by Jim Henson and built by puppet designer Caroly Wilcox.

The two heads usually speak in baby-like gibberish, communicating through sounds, gestures, and occasional emphasized words. Their sketches often involve sounding out words together, then combining the sounds into a complete word. This structure makes cooperation and communication the central educational ideas behind the character.

The heads have contrasting appearances and temperaments. One has purple hair with a black beard and upturned horns, while the other has black hair with a purple beard and downturned horns. Although the question may invite descriptions such as “a two-headed monster,” Two-Headed Monster is the character’s canonical name.