Eight-Armed Willy is a minor character and reformed villain in the series, The Marvelous Misadventures of Flapjack. The giant creature is one of the most vicious creatures in the sea.
Eight-Armed Willy is a pinkish giant octopus that wears a patch over his right eye (which is later revealed to be due to blindness in that eye), but when he's outside, he is more purplish. He also wears a galleon upon his head in a hole and has many stitches. And he has a green mouth with sharp teeth and a long nose. In the unreleased pilot, he didn't have a boat lodged in his head, stitches, many teeth, and a green mouth. He only had two teeth, a pink mouth, and his eye patch. According to a picture in the Candy Barrel, he only needs four arms to sink a galleon. During an arm-wrestling contest with Flapjack, he lost one arm. In "Willy", he gives everybody his ink due to an ink shortage which probably he put aside his evil ways afterwards.
- It is revealed in "Willy!" that he loves to sing.
- He is a recurring villain throughout the series, often associated with other monsters in the episodes.
- He shows fondness for Flapjack.
- He makes a cameo appearance in Punch Time Explosion! as Flapjack's special attack move.