My theory about a few cartoon's.

A Marvelous Misadventures of Flapjack Fanfic! Flapjack will be fourteen years old, not his canon age from the cartoon. Oh and the characters will all look human, just to let yall know.

A weird witch lady comes to Stormalong Harbor and grants Flapjack and K'nuckles a wish. "Whales as strong and bold, hearts pure as gold. Humans dangerous and bums, may she transfer to human she becomes." Not knowing what the wish riddle means, maple syrup addict agrees without Flapjack's word. Let us just say both of their worlds will change.

I know this show is old but I love this ship and I can't find any storys of this so I guess I'm a first