' ' 'Heinz Doofenshmirtz' ' ' is an antagonist in the Ridonculous Race. He personally believes that Hunkahunka was his nemesis and mistook his friendship with Zachary for rivalry. Following his supposed demise, he became the true main antagonist in the Ridonculous Race: Summer Edition (and thus the second Phineas and Ferb charafter to be the antagonist).

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