M
| Character | Actor/Muppeteer | Description |
|---|---|---|
| Mama Bear | Alice Dinnean (1991-2002) Jennifer Barnhardt (2003–present) | Baby Bear's mother and part of the three bear family from the fairy tale. She is the least frequently appearing member of the family. She is a recycled version of Flo Bear. |
| Maurice Monster | Jim Henson, Richard Hunt, Jerry Nelson | A light blue shaggy monster with a light green nose. He is the only Muppet to have been around that long without becoming a main character. |
| Mel | Kevin Clash | A gibberish-speaking blue monster with yellow horns who is a member of the Monster Clubhouse. |
| Meryl Sheep | Camille Bonora | A sheep who is a spoof of Meryl Streep. |
| Mona Monster | Cheryl Blaylock | Telly Monster's sister. |
| Monty | Martin P. Robinson | Tribute to Monty Python's Flying Circus. |
| Mr. Chatterly | Jerry Nelson | An Anything Muppet who is the genial host of Alphabet Chat. His name is a reference to the D.H. Lawrence novel Lady Chatterley's Lover. |
| Murray Monster | Joey Mazzarino | Host of the "Word on the Street" segment, Murray is an energetic, quick-witted, outgoing, inquisitive, furry and orange Muppet. |
Read more about this topic: List Of Sesame Street Muppets