Balloony is a resident of the Balloon Dimension who first appeared in "Phineas and Ferb: Across the 2nd Dimension (video game)". He greets whoever the player chose for the level along with Heinz Doofenshmirtz, who is happy to see him again. Balloony soon says that he doesn't think he would be friends with Doofenshmirtz on any dimension, and the player resumes as Heinz retorts.