Mike Roth Director (2) Merry Little Batman (2023) Regular Show (2010) Writer (6) Merry Little Batman (2023) Summer Camp Island (2018) Apple & Onion (2016) Regular Show: The Movie (2015) Regular Show (2010) Phineas and Ferb (2007) Producer (2) Merry Little Batman (2023) Regular Show: The Movie (2015)