Bill's returned, and the existence of 2 young inventors gives him the weirdness needed to escape the confines of Gravity Falls, Oregon. Phineas is having nightmares and is willing to make a deal with the devil to get rid of them. Amphibia, The Owl House, Milo Murphy's Law don't come in until weirdmageddon starts. I ship Phinabella, Lumity, & Dipcifica, tho idk if they'll show up.
Crossover - Phineas and Ferb & Gravity Falls - Rated: T - English - Friendship/Adventure - Chapters: 5 - Words: 5,586 - Favs: 2 - Follows: 1 - Updated: 8/25/2021 - Published: 8/20/2021 - Isabella, Phineas, Ferb, Bill