5 Weird Facts From the Gravity Falls Series Finale

Nivea Serrao
GRAVITY FALLS - "Roadside Attraction" - Grunkle Stan takes the kids with him on a road-trip to sabotage all the other tourist traps in Oregon. This episode of "Gravity Falls" will air Monday, September 21 (8:00 PM - 8:30 PM ET/PT), on Disney XD. (Disney XD)
DIPPER, GRUNKLE STAN
Disney XD

It's the end of the world as we know it on Disney XD's Gravity Falls as Weirdmageddon continues to rage on.

RELATED: 7 things to know about the Gravity Falls series finale 

But while creator Alex Hirsch remains tight-lipped about what's coming up in the hour-long series finale (Monday, Feb 15 at 7 p.m.), he is willing to share five weird facts about the whole Weirdmageddon arc—including the possibility of a few more crazy celebrity cameos—in this exclusive video:

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Gravity Falls series finale, Monday, February 15th at 7/6c on Disney XD