The creator of Codename: Kids Next Door also served as production design for what series?
Codename: Kids Next Door: Codename: Kids Next Door, commonly abbreviated to Kids Next Door or KND, is an American animated television series created by Tom Warburton for Cartoon Network, and the 13th of the network's "Cartoon Cartoons". Tom Warburton:  Prior to that he served as production designer on the first season of "Beavis and Butt-Head" and was the lead character designer for the animated series "Pepper Ann".
Beavis and Butt-Head