An underwater genie
Flounder isn’t the only out of place character to be found in the Polynesian adventure. We know that, at the end of Aladdin, evil sorcerer Jafar gets his comeuppance when he ends up stuck in the genie’s lamp for all eternity. “Phenomenal cosmic power; itty bitty living space!”
Well, it seems that, rather than ending up serving some interesting master with magic wishes, Jafar found his way to the bottom of the ocean. If you’re quick during Tamotoa, the flamboyant giant crab’s song in Moana, you can see that he has the genie’s lamp on his back as part of his sparkling collection.