Adventure Time's Big Fionna Twist Explained by Showrunner

The showrunner for the Adventure Time spin-off, Fionna & Cake, explained the big twist in the fourth episode.

In Adventure Time, Fionna and Cake were the in-universe fanfiction of the Ice King, based on the heroes of Ooo, Finn & Jake. But Adventure Time and Fionna & Cake showrunner Adam Muto wanted to push Fionna and her feline friend to be more than a "girl Finn" and Jake.

To accomplish that, the two had to move beyond being the borderline creepy fanfiction of an old man, so the first thing that had to be changed was their origin in the new HBO Max spin-off.

Read full article on The Direct.