King Ka-thunk

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King Ka-thunk
King Ka-thunk
First appearance Super Mario 3D World (2013)
Latest appearance Super Mario 3D World + Bowser's Fury (2021)
King Ka-thunk, as seen in-game.
Fighting King Ka-thunk.

King Ka-thunk[1] (known as King Kathunk in the British English version of the original game) is a boss that appears in Super Mario 3D World and its Nintendo Switch port Super Mario 3D World + Bowser's Fury as the boss of World 5-Castle: King Ka-thunk's Castle. He is a small, blue metal square with red shoes and detached red hands. He also has five spikes on the front (one of which is positioned like a beak right below his eyes) and his back is pink and fleshy with a bandage on it. King Ka-thunk floats in the middle of another, larger Ka-thunk frame.

He serves as the boss of World 5. His main attack is moving around the Ka-thunk frame before finally stopping in one of the corners. After this, the ground that King Ka-thunk will fall on glows red before he crashes into the ground, damaging any players caught under him or his frame. To damage King Ka-thunk, the player has to jump on his backside while he is facing down. Oddly enough, he is not damaged if a player is thrown onto his weak spot by another player. After each hit, two of the arena's corners will fall off, and King Ka-thunk will become faster and more erratic. Once three hits are landed, King Ka-thunk is defeated, several circles of Coins appear, and the Warp Box to the Goal Pole is revealed.

King Ka-thunk later reappears as one of the bosses in World Flower-12: Boss Blitz with the exact same strategy from his first battle in World 5.

Names in other languages[edit]

Language Name Meaning
Japanese Boss Wackun[2]
Gacchin Kingu
From Ka-thunk's internal name, "Wackun"

From「ガッチン」(Gacchin, Ka-thunk) and "king"
Chinese (Simplified) 框当王
Kuāng Dāng Wáng
"框当" is derived from "框" (kuāng, frame) and "哐当" (kuāngdāng, the sound of crushing objects), and "王" means "king".
French Roi Klonk King Klonk
German König Klonk King Klonk
Italian Re Clompo King Clompo; "Clompo" derives from the sound of crushing objects (CLOMP!)
Portuguese Rei Quadrapumba Rei means "king"; Quadrapumba comes from quadrado (square) and pumba (thumping sound)
Russian Кар-Кас
From каркас (karkas, means "frame, carcass") and кар (kar), the sound of a crow
Spanish Rey Marcoplás King Frameplaf. Marco means frame and plas means plaf; Marco is also a name (Mark)


  1. ^ Level name: King Ka-thunk's Castle
  2. ^ Super Mario 3D World internal filename (BossWackun)