Phineas and Ferb Season 3 Episode 34 The Remains of the Platypus ( Air Date 2012-02-24 ) Genre Animation, Comedy, Family, Sci-Fi & Fantasy category. Overview "Craziness has ensued in Danville and no one has any idea what’s going on. The wackiness unfolds when Phineas and Ferb create Cheesetopia, Doofenshmirtz makes Perry his butler with his Butler-inator, and Carl is trapped by Doof while in a squirrel costume. All is explained, in an episode of Phineas and Ferb that starts at the end and works its way back to the beginning.".