Gubler played Joe Joe in the film RV (2006). He voiced Simon the chipmunk in Alvin and the Chipmunks (2007), Alvin and the Chipmunks: The Squeakquel (2009), Alvin and the Chipmunks: Chipwrecked (2011), and Alvin and the Chipmunks: The Road Chip (2015).
Gubler played Joe Joe in RV (2006). In Alvin and the Chipmunks (2007) and its sequels, he voiced Simon the chipmunk.