Mr. Noodle's brother, Mr. Noodle is a regular on the "Elmo's World" segment of Sesame Street. This "other" Mr. Noodle replaced his sibling, also named Mr. Noodle, in Season 31. The following season featured the two brothers together, and they subsequently alternated with each other.
Both Noodles and their sister, Ms. Noodle, appeared in various "Elmo's World" videos. When performer Michael Jeter passed away in 2003, the original Mr. Noodle remained, but his brother can still be seen in repeated segments.