Mr. Nesmith is a chimpanzee from Earth who has been living on Zeenu for 48 years. He came to Zeenu as a normal chimpanzee, but after his rocket crashed in 1962, he developed advanced intelligence and the ability to speak, due to the higher gravity. On Earth, he was a circus performer, along with his wife, Beverly. Mr. Nesmith is often fed-up with Sheen's antics, but tolerates him in hopes that they may be able to fix Sheen's rocket and return to Earth. He lives with Sheen in their apartment on Zeenu. His wool cap and name is in reference to Michael Nesmith of the 1960s pop rock group The Monkees. He is Jimmy Neutron's counterpart of the show.
Mr. Nesmith appears as a playable character in Nicktoons MLB. He throws right-handed.
- Splitter: *****
- 2 Seam: *****
- Curveball: **
- Changeup: ***
Nicktoons: Toons WarsEdit
Mr. Nesmith appears as a collectable trophy in Nicktoons: Toons Wars.