Animation · Phineas and Ferb invent, scheme and stay one step ahead of their bratty sister. Meanwhile, their pet platypus plots against evil Dr. Doofenshmirtz. Phineas and Ferb is an American animated musical comedy television series. Originally broadcast as a one-episode preview on August 17, and again. Phineas and Ferb Wiki is a website anyone can edit about the hit Disney series, from episode summaries to character biographies. When I first heard about Phineas and Ferb Fische befreien wasn't quite sure what all the rave was. He is always polite and honest to. Kids Next Door — He is one of the three children of the Flynn-Fletcher household, with a disapproving older sister Candace and a step-brother, from Lawrence's side of the family, under the alias of Ferb. Lawrence has come across Phineas and Ferb's schemes, but it does not seem to faze. He seems to have inherited his obliviousness from his mother.