Marx

Marx is the final boss in the game "Milky Way Wishes", which is a part of the game "Kirby Super Star", and "Kirby Super Star Ultra." Marx's plan is to use Kirby to awaken NOVA, the wish-granting comet at the galaxy's end, and wish to rule Kirby's planet, Popstar. To get Kirby into space, he causes the sun and moon to fight, and asks Kirby to make peace between them by asking NOVA. After stopping NOVA, Kirby flies to Popstar to battle Marx, and defeats him in his true form. Marx flies into NOVA, out of control, causing NOVA to break into peices. The force of the impact kills Marx. However, Marx cannot truly die until his wish to rule Popstar is granted. In "Kirby Super Star Ultra", A game mode was added called "The TRUE Arena", where if you managed to defeat all the previous nine bosses, you would fight Marx's soul, which was MUCH more powerful.

Personality
Marx is the sort of villain that plans ahead before putting his plan into motion. His favorite thing to do is cause all the mischief that he wants to cause.