Frank Conniff is a comedy writer and performer who began his TV career writing for the Peabody Award-winning Comedy Central series Mystery Science Theater 3000, where he also played TV’s Frank, the bumbling yet lovable mad scientist sidekick.

He then went on to be a writer, producer, and actor on the ABC TV series Sabrina the Teenage Witch and he was a writer and producer on The Drew Carey Show on ABC, The New Tom Green Show on MTV, and the satirical series O2BE on the Oxygen Network, where he was also a cast member. He was head writer of the animated Nickelodeon series Invader Zim, and also was a writer and producer for the Air America Radio network, where he provided material for on-air personalities Rachel Maddow, Marc Maron, Lizz Winstead, Al Franken, Janeane Garofalo, and Randi Rhodes.

He was a writer and performer on Viewpoint with John Fugelsang on Current TV, and on Totally Biased with W. Kamau Bell on the FXX network, and he also writes and performs on The Jimmy Dore Show and appeared regularly on Tell Me Everything with John Fugelsang on the SiriusXM Insight channel. He is the writer and star of a live stage show, Cartoon Dump, and he writes, produces and directs original musical comedy radio plays for his podcast, Podhouse 90.

He is currently touring the country with Trace Beaulieu in a live movie-riffing show, The Mads Are Back, and podcasting regularly on Movie Sign with the Mads.