As Dipper waited for the demon to appear, he began to doubt Bill was even still alive anymore. Stan was convinced the demon still existed somewhere, but Dipper wasn’t sure if he was alive. Existing and living are two very different things. He was feeling foolish, contemplating whether or not he should simply destroy the evidence of him even attempting to contact Bill again before the demon exploded right back into living. It surprised Dipper, more for the fact Bill hadn’t been destroyed like he had hoped instead of Bill’s sudden appearance.
Staring at the familiar yellow triangle before him, Dipper couldn’t help but feel anger, revulsion. He absolutely despised the demon and he couldn’t believe he let himself be persuaded to bring this thing back from whatever hell hole he was left in. During the silence, Dipper chided himself for even considering that summoning Bill was an actual possibility. He was obviously furious as he sat there, his expression not changing even as the demon began to speak.
However, he only grew more irritated, he couldn’t have Bill simply forgetting about him. Maybe being blasted along with Stan had knocked his own memories loose, at least some of them. If Bill remembered Gravity Falls, he obviously remembered something, but he didn’t exactly need and amnesiac demon, he needed one that could help. He needed one that could screw right off back to its dimension as soon as he was finished, he didn’t exactly think Bill wanted to be stuck in Gravity Falls after his oh so glorious defeat, Dipper wouldn’t let him stay for long anyway.
“Cut it out, Bill,” Dipper interrupted the demon, standing up to his full height then. He was frowning, his own eyes staring right back into Bill’s singular eye. He didn’t want to talk for long, he just wanted to do what he came for, “I don’t know why or how you’re alive and I don’t exactly want to know, but what I do want to know is if you’re still interested in deals,” Of course, Dipper would be setting the terms and conditions for this one. He learned by then that Bill was a con artist, a total scam, but he could at least try and have some say in what these deals would be from now on.
“You help me, I help you.. simple. Of course, if you don’t want to help, then I guess I’ll just send you back to wherever you came from.”
“Well well well, if it isn’t my favorite Pine Tree, all grown up. I almost didn’t recognize you!” Bill kept his voice casually cheerful, but his mind was racing. He must not have been in that space as long as it had seemed, Pine Tree seemed relatively young still, barely an adult. But he certainly hadn’t forgotten what Bill had done, his eyes were filled with loathing. So, why would he summon Bill, then? What threat would make him resort to turning to an enemy he likely thought dead?
“You must be pretty desperate to summon me. So what sort of deal are we talkin’?” He didn’t really want to help Pine Tree. Let the boy rot in whatever mess he had gotten himself into. Let him send Bill back to the mindscape, it wouldn’t matter at this point. Bill was whole again, and while he had a bit extra mixed in, he was more or less back to full power. Dipper had unknowingly sped up what could have been centuries of recovery.
I guess I do owe him a favor for that. Maybe he would throw the kid a bone, help him out with whatever he had summoned him for, if it seemed interesting enough.