His list of credits include writing for, producing, and voice acting in several cartoons, first as the Jerry Lewis-esque Mr. Director in Animaniacs.

and Nostradamus in Histeria!, as well as the main recurring villain, Dark Lord Chuckles the Silly Piggy in the Disney series Dave the Barbarian.

He also played the voice of Principal Rotwood in the Disney Channel series American Dragon Jake Long.

Alongside Adam Carolla and John P. McCann, Rugg was an improvisational actor at the ACME Comedy Theatre in Los Angeles, where he created the character Manny the Uncanny.

In 2008, Rugg attended San Diego Comic-Con alongside Paul Dini, Jean MacCurdy, John P. McCann, and Andrea Romano.