|Theme||Big Boss Blues|
|Notable features||End level
|Boss||KAOS, Baron K. Roolenstein|
|Game||Donkey Kong Country 3|
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Kastle KAOS is the final boss level in Donkey Kong Country 3, where Dixie and Kiddy have to fight KAOS again and the real master of the Kremling Krew, Baron K. Roolenstein. The Kongs must travel through the KAOS Kore to reach the Kastle.
The Kastle, when viewed from afar, is a towering, dark, ominous castle with a mysterious purple glow on the top floor visible from outside. When the player enters Kastle KAOS, it's revealed to have a large room, with what appears to be control panels in front of a large window. The area also appears to be a small laboratory, with beakers, books, and miscellaneous things scattered throughout; KAOS was repaired here after Dixie and Kiddy's encounter with it. Notably, the room has two electricity generators on each side to create electric shots used for harming purposes; anyone, including Baron himself, caught in the shock will be injured badly.
When the Kongs first reach the area, they will have a rematch with KAOS. After that's done, it will be destroyed and Baron will come out of the red curtains in the background, a reference to the famous scene in The Wizard of Oz. Then, the true final battle shall begin. Enraged, the Baron will fly around and try to ram into the Kongs initially, and later on activate the electric chargers below. More information on his article.
- After beating KAOS again, he is never fought again on subsequent tries—the game will always skip to Baron's part when the stage is tried again.