Board Thread:General Discussion/@comment-26971836-20150909073035/@comment-27738735-20150930200325

It's not impossible.

Pros about Gideon:

Genuinely likes Mabel

Is at least a little sorry for what he did

Has a fairly good reason to be mad and seek revenge on the pines

Cons

Summoned Bill (but so did Dipper and Ford...)

Is a brat

Lied to the people of gravity falls

Hates Dipper (and other pines, excluding Mabel)