You will Watch Phineas and Ferb Season 4 Episode 13 online for free episodes with HQ / high quality. Stream cartoons Phineas and Ferb Episode 13 Mission Marvel. Dr. Doofenshmirtz creates an invention that accidentally de-powers Iron Man, the Hulk, Spider-Man and Thor. The powerless heroes travel to Danville to get Phineas and Ferb to help them stop MODOK, the Red Skull, Whiplash and Venom who have teamed up with Dr. Doofenshmirtz to destroy the city.
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