Ghastly King
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The Ghastly King is the Cactus King with another name in Donkey Kong Jungle Beat. Ghastly King is fought the same way as Cactus King, and looks exactly like him.
Before reaching him, Donkey Kong has to go through the same exact level he went through to fight Cactus King - except it is much harder. Ghastly King also was also harder, having a few more attacks; Ghastly King was also the final boss of Donkey Kong Jungle Beat.
It looks as if he put a spell on the Kong kings because after defeating him, Dread Kong, Ninja Kong, Karate Kong and Sumo Kong celebrate Ghastly King's defeat and don't attack Donkey Kong, instead, they cheer him.