User blog comment:DamiedeterJR/The Gravity Falls Movie (Spongebob Movie parody)/@comment-15097363-20140531194001/@comment-4784313-20140603121159

Oh yeah, about that: In this, the Bill that's playing Neptune turned good and he grew an evil counterpart (Mabel playing as Mindy will mention this in the 2nd part which I'm about to start on).