[s1e1] Rollercoaster/candace Loses Her Head May 2026

: The invention conveniently vanishes just as Linda arrives, a staple "helpful" plot device usually caused by Dr. Doofensmirtz's antics.

: Perry the Platypus sneaks off to his secret lair to receive a mission from Major Monogram, marking the first time he foils Dr. Doofensmirtz's "Inator." [S1E1] Rollercoaster/Candace Loses Her Head

In the pilot episode of Phineas and Ferb , several "helpful" recurring features and tropes of the series are established: : The invention conveniently vanishes just as Linda