"Why aren't you using the gift I gave you, Belos?!" asked Bill.
"Because it would be useless to use it on them, just like how Viper's gift was useless on those three!" said Belos as he noticed Anne, Sasha, and Marcy returning. Sasha was carrying the charred remains of Viper who she tossed to the ground at Bill's feet.
"I don't understand," said Bill, whose hands were shaking.
"How can a bunch of mortals be this strong?!" he asked.
"Because we're not fighting to destroy or take something from other people," said Anne.
"We do so in order to stop evil like you who would dare hurt those we care about," said Luz while pointing her bat at the triangular demon.
"And it's also why you'll never win, because you're the bad guy in all of this," said Dipper.
"You want to see a bad guy, then I'll give you one!" said Bill while both hands were engulfed in blue flames.
"What… what are you doing?!" asked Belos while finding himself being pulled up to the sky.
"I'm moving on to my final plan, using the gift that I gave you," said Bill.
"This does not look good," said Gus while noticing the Ghoms being pulled toward Belos who by this point was fifty feet in the air. As all of the monsters gathered, they formed the shape of a giant Ghom while Belos turned to a liquid that coated it to give one uniform appearance to the surface.
"Yeah, that's definitely not good," said Ford.
"Did you really think that I wouldn't force you to use the gift?!" asked Bill with an evil laugh.
"Now go my beast, go and destroy Gravity Falls and that barrier!" he said.
"I'll show you a barrier!" said Dipper before he and Mabel threw some stones at the demon.
"Ah, what is this?!" asked Bill while the stones stuck to him, restraining his movements with small wires of green energy that wrapped around his body.
"Those are Nordic sealing stones, even the Gods couldn't break free from them so just stay put for now," said Mabel.
"I don't think you two have enough of those stones to stop that thing," said Luz while noticing the monster heading to the town.