How many movies have Jeff 'Swampy' Marsh and Richard O'Brien acted in together?

They have worked on 6 movies together! Their first movie together was Phineas and Ferb The Movie: Across the 2nd Dimension (2011) while their highest rated movie together was Phineas and Ferb: The Perry Files - Animal Agents (2013). They have not worked together since Phineas and Ferb the Movie: Candace Against the Universe (2020). They are most known for their animation films together.

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Major Monogram (voice)
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Lawrence Fletcher (voice)
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Major Francis Monogram (voice)
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Lawrence Fletcher (voice)
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Lawrence Fletcher / Additional Voices (voice)
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Major Hologram / Imperial Officer Jeff / Additional Voices
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Francis Major Monogram / Gordon Gutsofanemu / Additional Voices
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Lawrence Fletcher (voice)
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Major Francis Monogram / Monogram-2 (voice)
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Lawrence Fletcher / Lawrence-2 (voice)
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