Sheen Estevez on Nickeleodeon is a spin off of Jimmy Neutron. With The Adventures of Jimmy Neutron: Boy Genius now behind us, Nickelodeon has been ramping up a new spin-off series. Now it is Planet Sheen, the newest CG animated toon based on the characters created by Steve Oedekerk, Keith Alcorn, and John DavisThe toon focuses on Sheen Estevez and his adventures after "borrowing" a rocket from Jimmy Neutron and landing on the planet Zeenu. Sheen must learn to deal with Zeenu's bizarre customs, a villain named Dorkus, a two-headed princess with a crush on him, and a talking chimp named klhuklyjk. Planet will premiere the return of Jeff Garcia as the voice of Sheen Estevez.