Actually, she's my stunt double. That's why we look totally alike except for her being a girl and me being a boy. There was a rigorous casting process, thousands of potential Dipper-a-likes tried out.

[They're twins. That look like twins. He's going to razz anyone and everyone that questions if they're related.]

In the movie we filmed, there's this great scene where it looks like I backflip off a truck onto a motor cycle and you can't even tell it's her instead of me. It was really good editing.