Tropey McTropeFace is a giant zoetrope that was created by Phineas Flynn and the gang and named as such by Buford Van Stomm during the second summer in Danville first appearing in the episode of the same name.
He is initially created as a giant version of a novelty toy to demonstrate the illusion of motion, which was done by the Fireside Girls, but when he is shot by Heinz Doofenshmirtz's turnover-inator, he begins a long and strange journey. He is serenaded by Michael Bublé. He ends up catching the notorious Danville Mother Mugger, a masked bandit who steals the umbrellas from mothers.
At one point on his adventures, he falls in love with the Ferris wheel in Danville Park. He attempts to give her flowers, but the laws of gravity lead him to the Van Stomm family reunion, where they are having a dispute over when to fall a tree. Tropey settles their argument when they spin around in him. The tree falling makes him roll again. He ends up saving a riverboat when it loses its paddlewheel, and helps the Farmer and His Wife roll out their big wad of bread dough.
When Tropey makes a detour through the desert, he joins a biker gang.
Making his way back to Danville, Tropey returns to his lost love, the Ferris wheel, but Doof's turnover-inator causes the park to turn over, making Tropey roll back again. While flying, he destroys Doof's inator. In his roll, he ends up saving Danville from an oncoming meteor, sending both of them floating in space. In the vastness of space, Tropey almost freezes, but is saved by a deus ex machina resembling zoetrope with a beard, who tells him it is not his time.
As he rolls back to the park, he finally reunites with the Ferris wheel in time for Phineas and the gang to ride on both of them, when Phineas notices three baby merry-go-rounds appearing out of nowhere, implying that Tropey and the Ferris wheel consummated their relationship.