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Voice of Sheen Faces New Health Battle
9 Dec, 2025
Summary
- Jeff was recently hospitalized in Southern California for an unspecified illness.
- He previously battled pneumonia in November, recovering and being discharged.
- Jeff is renowned for voicing Sheen in the 'Jimmy Neutron' franchise.

The familiar voice behind the character of Sheen from the popular "Jimmy Neutron" franchise has recently been hospitalized in Southern California. The specific cause of his current health issue is not yet public knowledge. This recent hospitalization comes after a previous bout with pneumonia in November. He had been recovering from that illness and was discharged from the hospital just a few days later.
Jeff's most notable work includes lending his voice to Sheen in the 2001 film "Jimmy Neutron: Boy Genius." His distinctive performance continued through 52 episodes of the animated television series "The Adventures of Jimmy Neutron: Boy Genius." The character's popularity even led to a dedicated spin-off show, "Planet Sheen," which premiered in 2010.
Beyond his voice acting career, Jeff is also a seasoned stand-up comedian. He had been actively performing comedy shows as recently as November, only a couple of weeks prior to his initial hospitalization. His ongoing work in comedy underscores his continued dedication to his performance career despite recent health challenges.