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Underfalls: A Gravity Falls/ Undertale Crossover

Underfalls: A Gravity Falls/ Undertale Crossover

26.5K Reads 876 Votes 13 Part Story
Ally the Trash Bin By Marshmewwos Completed

"Dipper, there is one last thing to prevent Bill's reign of terror for good. You must climb to Mt. Ebbot, not far from here, and retrieve some inter-dimensional travel-block. It will prevent Bill from ever crossing into our realm, and taking over our world."

"Ok Great Uncle Ford. I'm on it-"

"Oh and Dipper?"

"Yes Great Uncle Ford?"

"Take Mabel with you. Its dangerous to climb Mt. Ebott one. Legends say that those who climb the mountain never return. Be careful Dipper,"

"I will. Thanks Great Uncle Ford."

~§~§~§~

Dipper and Mabel Pines are your average twins, spending the summer at their "Grunkle" Stan's Mystery Shack. But, as the summer progresses, Stan's twin brother, Stanford, returns. Bill, the evil inter-dimensional mastermind plans to cross over into the world of Gravity Falls, and the apocalypse of "Weirdmageddon" draws near.Then the twins are forced to Mt.Ebott, where theyll do the unthinkable...

- - Mar 09
WARNING!!!!
                              
                              
                              
                              This story contains sencs of stupidty, Gravity Falls, fighting, and some more sanspai for the fan girls.
                              
                              
                              
                              READ AT YOUR OWN FRISK. I MEAN RISK.
Pizzaray Pizzaray Aug 29, 2016
So they just don't question the weird text boxes that appear.
Mitchify Mitchify Nov 23, 2016
HE'S YELLOW, REMEMBER BILL?! BILL'S YELLOW. DON'T TRUST HIM.
I have an idea, the inter-Dimensional travel-block is gonna be the thing that allows them to reset
SkrubzKirby SkrubzKirby Aug 20, 2016
I mean they would dipper would probably be perserverance and mabel would be kindness but thats ok too.
Thegoldencheezer Thegoldencheezer Mar 15, 2016
Dipper and Mabel must be so confused... and filled with "determination"...