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Oh no! The water! I'm in big trouble if I don't fetch it!
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Monstro KH.png
Monstro Logo KH.png
Japanese モンストロ

Romaji Monsutoro
Games Kingdom Hearts
Kingdom Hearts Chain of Memories
Kingdom Hearts 3D: Dream Drop Distance
Kingdom Hearts Melody of Memory

Assistants Riku[KH I]
Origin Pinocchio (1940)
Themes Header.png

KH tracks
Field theme - A Very Small Wish
Battle theme - Monstrous Monstro
KHCOM tracks
Field theme - A Very Small Wish
Battle theme - Monstrous Monstro
Other worlds
Introduced in Kingdom Hearts
Dive to the Heart | Destiny Islands | Disney Castle
Traverse Town | Wonderland | Olympus Coliseum
Deep Jungle | Agrabah | Monstro
Atlantica | Halloween Town | Neverland
100 Acre Wood | Hollow Bastion
End of the World | Realm of Darkness
Introduced in Kingdom Hearts Chain of Memories
Castle Oblivion | Twilight Town
Introduced in Kingdom Hearts II
Mysterious Tower | Radiant Garden
The Land of Dragons | Beast's Castle | Timeless River
Port Royal | Pride Lands | Space Paranoids
The World That Never Was | End of Sea | Keyblade Graveyard
Introduced in Kingdom Hearts coded
Introduced in Kingdom Hearts Birth by Sleep
Land of Departure | Mirage Arena
Dwarf Woodlands | Enchanted Dominion | Castle of Dreams
Disney Town | Deep Space
Introduced in Kingdom Hearts 3D: Dream Drop Distance
La Cité des Cloches | The Grid | Symphony of Sorcery
Country of the Musketeers | Prankster's Paradise
Introduced in Kingdom Hearts χ[chi]
Daybreak Town
Introduced in Kingdom Hearts Union χ[Cross]
Game Central Station | Niceland | Cy-Bug Sector | Candy Kingdom
Introduced in Kingdom Hearts III
The Final World | Secret Forest | Olympus
Toy Box | Kingdom of Corona | Monstropolis
Arendelle | The Caribbean | San Fransokyo
Scala ad Caelum | Quadratum

Monstro is a character introduced in Kingdom Hearts. He is a sperm whale so gargantuan that he is able to swim the Ocean Between and act as a world, and has a reputation for swallowing anything that crosses his path, even entire ships.

Monstro's innards serve as a world in Kingdom Hearts and Kingdom Hearts Chain of Memories, and as a subworld of Prankster's Paradise in Kingdom Hearts 3D: Dream Drop Distance. Monstro himself serves as the boss of the Monster of the Sea battle in Kingdom Hearts Birth by Sleep Final Mix, and is fought in a simulation in the Mirage Arena.

In Kingdom Hearts, Monstro will intercept and swallow the Gummi Ship when travelling to Atlantica or Halloween Town for the first time. If one leaves Monstro and tries to go a different direction, they'll be caught by Monstro again and he'll appear twice on the World Map. After defeating the Parasite Cage, Monstro's position on the World Map will be fixed at one location. On subsequent visits, Monstro will only have a 50% chance to appear. In Kingdom Hearts Final Mix, Monstro will always appear when using Warp Drive, or when using Normal Drive while already at Monstro's location.

Settings and Areas[edit]

Kingdom Hearts[edit]

Artwork of Monstro's mouth.

Sora and his party enter through the Mouth ( Kuchi?), the largest room in the world. Here, among the piles of wood and shipwrecks, the party will come across Geppetto and Pinocchio, as well as one of the world's Save Points. Troublesome Pinocchio leads the party down the into the whale's innards.

Artwork of one of Monstro's many inner chambers.

Chamber 1 (腹部1 Fukubu Ichi?, lit. "Abdomen 1") is the arrival point for the party here. The lowest passage leads to a dead-end at Chamber 3 (腹部3 Fukubu San?, lit. "Abdomen 3"), marked by a large piece of debris blocking off the other lowest exit. The door on the ledge of Chamber 1 will take the party to Chamber 2 (腹部2 Fukubu Ni?, lit. "Abdomen 2"), which leads to Chamber 3 going down, and to Chamber 5 (腹部5 Fukubu Go?, lit. "Abdomen 5") going up. Chamber 6 (腹部6 Fukubu Mu?, lit. "Abdomen 6"), which comes soon after, stands out because it is formed like a set of stairs. Chamber 5 will also send the party to Chamber 4 (腹部4 Fukubu Yon?, lit. "Abdomen 4"), where a Save Point is located. During the initial visit, following the green flashing passages will lead Sora straight to this chamber which further leads to the Bowels ( Chō?), where the first battle against the Parasite Cage is fought.

Returning to the Mouth and using High Jump - which can be a found in a chest near Geppetto at this point - the party can at last reach the Throat (のど Nodo?), a tall, pink chamber with a series of ledges to ascend. At the top, the party can reach the Stomach (胃袋 Ibukuro?) and the second boss battle against the Parasite Cage.

Kingdom Hearts Chain of Memories[edit]

In Kingdom Hearts Chain of Memories a memory version of Monstro can be explored at Castle Oblivion. The world is explored through boxed-in areas which draw inspirations from the various Chambers from the previous game. In cutscenes, areas such as Chamber 6 and the Mouth are visited. The battle against the Parasite Cage takes place in an area similar to the Stomach, though the floor is mostly covered in stomach acid and there are no platforms along the wall to jump on. Lastly, Sora visits an area similar to the Throat during a rumble against some Shadows. However, the area is a lot bigger with a circular arena in the middle.

Kingdom Hearts 3D: Dream Drop Distance[edit]

Main article: Prankster's Paradise


Kingdom Hearts[edit]

Pinocchio is off playing games with Riku.

Sora, Donald, and Goofy are flying away from Agrabah to get to their next destination, when they spot something huge flying towards them on the Gummi Route. They quickly realize it is a massive whale, but cannot get out of the way before the beast swallows their ship whole.

Inside Monstro's flooded mouth, the trio finds Pinocchio again and meets his father Geppetto in a broken ship. While speaking with Geppetto, Pinocchio slips off to explore Monstro. Sora and his party quickly run after the puppet into the bowels of Monstro. There, he finds Riku; the two friends exchange some quick words before Riku runs off with Pinocchio, hinting at Riku's newfound darker nature.

Sora, Donald, and Goofy chase the two through the whale, until they eventually finds them in a large circular chamber: the bowels of the beast. Pinocchio is taken captive inside the Parasite Cage Heartless. Sora and Riku team up to take down the Heartless, but are unable to completely destroy it. Riku takes Pinocchio; his words hint to Sora that there is something different about his old friend. Sora tracks the puppet to the Stomach, where Riku and the Heartless attempt to take Pinocchio's heart, but fails. Riku flees as Sora enters the belly of the beast where he defeats the Parasite Cage once and for all and rescues Pinocchio.

From all the commotion in his organs, Monstro spews out the Gummi ship and the trio to prevent any more trouble. Pinocchio and Geppetto also escape and set up a shop in Traverse Town.

This information is based on alternate scenes or materials and is not considered canon within the overall plot of the series.

If Sora goes to Monstro after encountering Riku and Kairi on Captain Hook's ship, "Riku" shows up to kidnap Pinocchio. Sora fights the Parasite Cage with Donald and Goofy. When Sora encounters "Riku" with Pinocchio, "Riku" mockingly asks Sora if he has forgotten his best friend, to which Sora responds that he is not Riku. "Riku" then summons the Parasite Cage and leaves through a portal of darkness.

Kingdom Hearts Chain of Memories[edit]

Sora, Donald, and Goofy visit a recreation of Monstro in Castle Oblivion. There, the events of Sora's first visit to Monstro are reenacted, minus Riku's involvement in the events that transpired. Both the chase for Pinocchio and the puppet's reunion with Jiminy are very similar. The party again fights the Parasite Cage, though only once this time. Pinocchio is told to be brave, his struggles eventually getting him out of the Heartless's maw-like belly. Sora, Donald, and Goofy also fight with several Shadow Heartless ensues in order to make Monstro spit out Pinocchio and Geppetto, as per the puppet's suggestion that a big enough struggle would cause the whale to sneeze. They succeed.

Meanwhile in the Basement, Riku explores the replica of Monstro, encountering and defeating the Parasite Cage.

Kingdom Hearts 3D: Dream Drop Distance[edit]

Main article: Prankster's Paradise

Monstro appears within the dream of Prankster's Paradise, where he yet again swallows Geppetto, Pinocchio, and Jiminy. The whale is soon after frozen by the Chill Clawbster. Sora battles the Dream Eater atop the ice, and in the course of the battle, he frees Monstro and shortly encases him in a bubble to chase after the Dream Eater. When they catch up to the Chill Clawbster, Monstro escapes the bubble and swallows the Nightmare, blowing Sora away in the process.


Monstro appeared in Walt Disney's 1940 animated feature, Pinocchio. He is based on the Terrible Dogfish from Carlo Collodi's 1883 book The Adventures of Pinocchio. He is first mentioned in a message from the Blue Fairy about Geppetto, who, sailing to find Pinocchio, has been swallowed by Monstro. Pinocchio and Jiminy Cricket search for him, but are frustrated by the fear the various sea creatures display at the mention of Monstro's name. After finally discovering Monstro sleeping, he suddenly awakens upon witnessing a school of tuna swimming nearby and swallows them, but also consumes Pinocchio, who discovers Geppetto in Monstro's throat. There, Pinocchio decides to free them by starting a fire, the smoke of which prompts Monstro to sneeze them out, whereupon he gets angry and pursues them. However, he fails to kill them and when Pinocchio pulls Geppetto into a cove, Monstro smashes against the rocks surrounding it.




Note: After rescuing Kairi from Hollow Bastion, Monstro will begin collecting sets of Heartless from every world except Atlantica, Halloween Town, Hollow Bastion, and End of the World. Each time Monstro is entered at this point, it will have its normal set of Heartless, as well as the Heartless set of a different world. The auxiliary set will change each time Monstro is reentered.