The first season of Phineas and Ferb aired on the Disney Channel from August 17, 2007, to February 18, 2009. The five main characters include stepbrothers Phineas Flynn and Ferb Fletcher, their neurotic older sister Candace Flynn, secret agent Perry the Platypus (who is also Phineas and Ferb's pet), and the "evil" scientist Dr. Heinz Doofenshmirtz.
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