Trivia / Phineas and Ferb: Mission Marvel

• Promoted Fanboy: Jeff "Swampy" Marsh and Dan Povenmire are Marvel fans.
• Real Life Writes the Plot: The conversation between Thor and Iron Man about the use of Mjolnir is based directly on a discussion the creators of Phineas and Ferb had with Marvel while writing the episode.
• Role Reprise: Fred Tatasciore, Drake Bell, Chi McBride, Travis Willingham, Adrian Pasdar, Liam O'Brien, and Charlie Adler reprise their respective roles of the Hulk, Spider-Man, Nick Fury, Thor, Iron Man, Red Skull, and MODOK.
• Throw It In!: According to Jeff "Swampy" Marsh, via some online video of Alyson Stoner recording her part for the song "Only Trying to Help", she ad-libbed the end of the song where Isabella says "trying to help Phineas."

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