Introduced in 2015, Julia is an old friend of Elmo's and the show's first autistic muppet. Though she communicates differently than her neighbors, she loves to create and play with her friends in her own way.

Julia debuted Sesame Street and Autism: See Amazing in All Children and was developed from extensive research and cooperation with the autism community. She is even portrayed by Stacey Gordon, who used her experience in raising her autistic child to inform the character more deeply.