[4] While at KAIT, Bumpass also wrote, produced, and performed in a late-night comedy program called Mid-Century Nonsense Festival Featuring Kumquat Theater.

[4][8][9] He is also known for voicing The Chief from Where on Earth Is Carmen Sandiego?, Doctor Light on Teen Titans, and Professor Membrane on Invader Zim.

In 1979, Bumpass was cast as the leading role in a National Lampoon film to be called Jaws 3, People 0 in which he would have a love scene with Bo Derek.

[12] Bumpass is best known to present-day viewers as the voice of Squidward Tentacles and various incidental characters on the Nickelodeon animated comedy series SpongeBob SquarePants.

Bumpass admitted to drinking and driving after leaving a Burbank bar before the police spotted him, and he was soon handcuffed after failing a sobriety test.

[20] On January 25, 2016, ten days after the incident, Nickelodeon representatives confirmed to TMZ that Bumpass would remain on SpongeBob SquarePants for the foreseeable future.

The representatives alleged that the network did not consider DUI charges to be an immoral act, and thus Bumpass was not legally subject to termination.