Monstro (モンストロ Monsutoro?)
is both a character and world from Kingdom Hearts. Like many of the worlds from the original game, it also appears in Kingdom Hearts: Chain of Memories as well.
Though technically an interspace creature, an unbelievably large blue whale with man-eating tendencies, to be exact, it acts as a world in the first two Kingdom Hearts games, due to its massive size. Pinocchio's World, as of yet unnamed in the Kingdom Hearts universe, was destroyed by the Heartless. Monstro is also one of the only three Disney-based worlds in Kingdom Hearts that does not have you fight alongside a protagonist of the original movie it is based off of; the other two are Wonderland and Olympus Coliseum.
It is possible to defeat the game without "locking" Monstro by skipping the final boss fight, but Gepetto and Pinocchio will not appear in Traverse Town and the game's secret ending movie will not be unlocked.
Monstro is the ruler of this world, as well as the world itself.
Heartless:
Shadow
Soldier
Large Body
Red Nocturne
Blue Rhapsody
Yellow Opera
Green Requiem
Bouncywild
Air Soldier
Bandit
Fat Bandit
Barrel Spider
Search Ghost
Grand Ghost
Pirate
Air Pirate
Darkball
Rare Truffle
Tornado Step
Parasite Cage-Boss
