View gallery Image Credit: Getty Images Jeffrey "Jeff" Garcia, the comedian and voice actor behind Sheen Estevez in Nickelodeon's Jimmy Neutron series, died on December 10, 2025. He was 50, and according to a report, he was suffering from multiple health complications leading up to his death. Hollywood Life has compiled five facts to know about Jeff and his career here. Jeffrey Garcia Was a Stand-Up Comedian Jeff began his entertainment career in the early 1990s as a stand-up comedian. He performed at various stand-up clubs throughout Southern California, including the famous Laugh Factory.