The Fearsome Five are a team of supervillains first assembled by Maleficent to serve the Hellfire Organization as one answer to the growing amount of crime factions allying with the Galactic Empire in the Kingdom Hearts Unlimited Saga. They later appear in the Second Trilogy, where they have defected over to Mok Swagger's Nightbreed Organization and have increased the number of their members by five more, becoming the Insidious Ten.