The characters are as follows: Pacifica=Mal,Dipper=Ben, Gideon=Carlos,Mabel=Evie,Mermando= Jay(ps he has legs if you were wondering), Grunkle Ford=Beast, Abuelita=Belle, Priscilla Northwest=Maleficent,Ms. Gleeful= Cruella de Vil, Grunkle Stan= Jafar, and the rest are same as the movie because I couldn't think of anymore Gravity Falls characters to use.
Pacifica: Once upon a time, long, long ago... well, more like 20 years ago... Belle married her Beast in front of 6,000 of their closest personal friends. Big cake. Yeah, so instead of a honeymoon, Beast united all of the kingdoms and got himself elected king of the United States of Auradon. He rounded up all the villains and sidekicks... basically all the really interesting people... and he booted them off to the isle of the lost with a magical barrier to keep them there. This is my hood. No magic. No wi-fi. No way out. Or so I thought. Hang on, you're about to meet us. But first this happened.
Man Sleeve. Head. Ah-ha!
Ford:How is it possible that you're going to be crowned king next month? You're just a baby!
Abuelita:He's turning 16, dear.
Dipper: Hey, pops.
Ford: 16? That's far too young to be crowned king. I didn't make a good decision until I was at least 42.
Abuelita: Uh, you decided to marry me at 28
Ford:Ah, it was either you or a teapot.(Dipper laughs)Kidding.
Dipper: Mom, dad...
Man: Ah! Nn-nnh!
Dipper: I've chosen my first official proclamation. I've decided that the children on the isle of the lost be given a chance to live here in Auradon.(Ford and Abuelita shocked)Every time I look out to the island, I feel like they've been abandoned.
Ford: The children of our sworn enemies, living among us?
Dipper: We start out with a few at first, only the ones who need our help the most. I've already chosen them.
Ford: Have you?
Abuelita: I gave you a second chance. Who are their parents?
Dipper: Cruella De Vil... Jafar... Evil Queen... and Maleficent.(Everyone shocked)
Ford: Maleficent! She is the worst villain in the land!
Dipper: Dad, just hear me out here!
Ford: I won't hear of it. They are guilty of unspeakable crimes.
Dipper: Dad, their children are innocent. Don't you think they deserve a shot at a normal life? Dad?
Ford: I suppose their children are innocent.
Abuelita: Well, well done. Shall we?
