The Marvelous Misadventures of Flapjack
Catch Me If You Candy / Fish Out of Water
S3 E6:
A candy stealing monster is on the loose in Stormalong. K'nuckles is arrested and Flap sets about proving his innocence. / Flap and K'nuckles eat too much candy and are transformed into fish. The town banish them to the underwater lair where they have to try and get back to normal.