Dan Povenmire and Jeff Swampy Marsh - Creators/Executive producers of Phineas and Ferb; Dan voices Dr. Doofenshmirtz and Swampy voices Major Monogram\r
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Dan and Swampy discuss their favorite -inators\r
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(C) Disneys Phineas and Ferb: Mission Marvel Premieres August 16 at 8 p.m. on Disney Channel. Used with permission.
