Jeff Garcia, the voice of Sheen Estevez from ‘Jimmy Neutron’, has sadly passed away at the age of 50, TMZ reports.

 

Jeff Garcia, the voice of Sheen Estevez from ‘Jimmy Neutron’, has sadly passed away at the age of 50, TMZ reports. pic.twitter.com/lRpoHd5AbW

— ToonHive (@ToonHive) December 10, 2025

 

The tweet from

@ToonHive

announces that Jeff Garcia, the voice actor for Sheen Estevez in The Adventures of Jimmy Neutron: Boy Genius (both the 2001 movie and the 59-episode series), has passed away at age 50.According to TMZ and later confirmed by Variety and Deadline, Garcia suffered a brain aneurysm earlier this year, followed by a stroke in recent weeks, pneumonia in November, and a collapsed lung on Tuesday, leading to multiple organ failure.The post has gone viral with over 1 million views and 44K+ likes, with fans sharing childhood memories, tribute videos, and classic Sheen memes in the replies.

Jeff Garcia (1975–2025) was an American stand-up comedian and voice actor best known for voicing Sheen Estevez in Jimmy Neutron: Boy Genius (2001 film), the original series (2002–2006), and the spin-off Planet Sheen (2010–2013).Key roles:

• Sheen Estevez (Jimmy Neutron franchise)
• Pip the Mouse (Barnyard & Back at the Barnyard)
• Rinaldo the penguin (Happy Feet & Happy Feet Two)
• Tipa and various birds in Rio and Rio 2

He began as a stand-up comic in 1991, appeared on Comedy Central, and worked steadily in animation for over 20 years, earning an Annie Award in 2004. He continued performing stand-up until November 2025.