What are the combinations in Phineas and Ferb carnival?

Answer 1

In one episode, Candace and Jeremy are joined at the hip (literally) because Doofenschmirtz zaps them with a 'combining ray', when Candace is meant to be spending a Jeremy free day' with Stacy. Isabella asks Phineas to go with her to a movie, but Ferb cannot go because there are only two tickets (which Isabella did deliberately to spend time with Phineas.) They don't get to go though, because Phineas and Ferb need to reconstruct their molecular separator to separate Candace and Jeremy without Stacy knowing. It works, but Stacy finds out. At the very end, Phineas is about to go to the movies with Isabella, but Phineas and Ferb get combined by the ray and end up as one mutated person, so Ferb gets to go see the movie too. Poor Isabella...

In another episode, Doofenschmirtz creates giant robot penguins (don't ask why...) and when he gets blown up by Perry the Platypus, he smacks into the penguin robot and they 'combine' causing them to be a strange carnival attraction.

Hope this is useful!