Jeff 'Swampy' Marsh
Characters voiced
- Major Francis Monogram (Phineas and Ferb)
- Francis Monogram (Phineas and Ferb)
- Major Francis Monogram / Monogram-2 (Phineas and Ferb the Movie: Across the 2nd Dimension)
- Major Monogram (Phineas and Ferb the Movie: Candace Against the Universe)
- Major Hologram / Imperial Officer Jeff / Additional Voices (Phineas and Ferb: Star Wars)
- Francis Major Monogram / Gordon Gutsofanemu / Additional Voices (Phineas and Ferb: Mission Marvel)