Career
Due to Daws Butler"s death in 1988, he voiced Elroy Jetson in the film Jetsons: The Movie. He also did the voices of Augie Doggie and Dixie in Hanna-Barbera"s, both roles that Butler had originated. He continued his career in the 1990s where he provided the voices for characters in the animated television series Tale Spin and Tom & Jerry Kids.
In 1995, Zimmerman appeared in person in the movie Stripteaser with Maria Ford and Rick Dean.
Zimmerman is perhaps most well known as Revolver Ocelot"s voice in Metal Gear Solid, Metal Gear Solid 2: Sons of Liberty and Metal Gear Solid: The Twin Snakes as well as Liquid Ocelot"s voice in Metal Gear Solid 4: Guns of the Patriots. He later returned as Revolver Ocelot"s voice in Metal Gear Solid: Digital Graphic Novel and Metal Gear Solid 2: Digital Graphic Novel.