In the pilot episode of Phineas and Ferb , several "helpful" recurring features and tropes of the series are established:
: This episode introduces Phineas’s iconic catchphrase when he notices Perry has disappeared. [S1E1] Rollercoaster/Candace Loses Her Head
: 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." In the pilot episode of Phineas and Ferb
: The invention conveniently vanishes just as Linda arrives, a staple "helpful" plot device usually caused by Dr. Doofensmirtz's antics. the massive coaster.
: Candace initiates her endless quest to "bust" her brothers by trying to show their mother, Linda, the massive coaster.
