Here are some of his prominent works in animation:
* Voice Acting:
* Regular Show: He voices Muscle Man and Hi-Five Ghost.
* Adventure Time: He voices "The Lich", a major antagonist.
* Uncle Grandpa: He voices "Belly Button" and "Mr. Gus".
* Steven Universe: He voiced several minor characters, including "Tiger Millionaire" and "Mr. Smiley".
* Bravest Warriors: He's credited as "The Lich".
* Clarence: He voiced "Jeff", a recurring character.
* The Amazing World of Gumball: He voiced "Richard Watterson" in the episode "The End".
* Writing:
* Regular Show: He was a writer on the show.
* Uncle Grandpa: He served as a writer.
* Clarence: He contributed as a writer.
If you're looking for his acting roles in animated projects, this list should give you a good starting point.