Jeff "Swampy" Marsh wrote Phineas and Ferb the Movie: Candace Against the Universe.
He also worked as an executive producer for Phineas and Ferb the Movie: Candace Against the Universe.
He also voiced Major Monogram/Additional Voices in Phineas and Ferb the Movie: Candace Against the Universe.
External links[]
Jeff 'Swampy' Marsh at the Internet Movie Database- Jeff 'Swampy' Marsh on Wikipedia
