User blog comment:Dereviewer/The New Gideon/@comment-25028958-20151028010931/@comment-24685871-20151029222656

That could definitely happen, Psychoking. But you know something, if I've learned anything from watching tons of TV shows as popular as Gravity Falls, whenever a villain is being told the error of their ways, sometimes they pretend to turn good in order to gain the good guy's trust. I mean, when Gideon agreed to let Dipper and Wendy rescue Mabel and to fight off Bill's army with his prison friends, who's to say he wasn't faking it. Gideon is very manipulative. He could've been faking the whole thing. He did fool everyone in town into thinking he was psychic. And even if he's not faking, it doesn't mean he's going to the good side. The only reason he's fighting Bill is to show Mabel he's worthy of loving, he's not trying to help the Pines Family. No one said he didn't still hold a grudge against them for getting him arrested.

Plus, I don't think Gideon will die. First of all, because he's only a child. And second, because he's a popular villain on the show. And even though he's gonna help Dipper and Wendy, it could only be temporary. And once Bill is defeated, Gideon will most likely be sent back to jail with his friends.