Rainn Wilson

Rainn Wilson is an American actor who is well known for his role as the   on the American version of the television comedy . He has also directed three episodes of The Office: the sixth season's "", the seventh season's "", and the eighth season's "." He also voiced the alien villain, Gallaxhar in the 2009 film .

He provides the voice of Rattleballs in the Adventure Time episode, "Rattleballs."