Jeff "Swampy" Marsh

Jeff "Swampy" Marsh (December 9, 1960–) is an American animator, writer, director, producer, and voice actor.

• From a cinema major’s perspective, philosophically, theoretically it’s easier for people to imprint on that character what they think they’re feeling. I don’t know why, but it seems easier for kids to identify with someone like Ferb, or Perry, when they say nothing.
  • Phineas & Ferb's Dan Povenmire and Jeff "Swampy" Marsh on Their Platypus Super-Spy Perry (30 May 2012)

• There was something wonderful about being able to look up and see what that physical representation was going to look like. It is one of the things that I miss, now that we’re in a much more digital age.
  • ‘Phineas and Ferb’ Creators Discuss ‘Candace Against the Universe’ — and the Possibility of More Sequels (August 28, 2020)