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SSBU spirit Marx (True Form).png
SSBU spirit Marx.png


Official artwork of Marx in Kirby Super Star.

A boss in Ultimate
Universe Kirby
Console of origin Super Nintendo Entertainment System
Location Mysterious Dimension
Article on WiKirby Marx

Marx (マルク, Marx) is a character from the Kirby series, and is the primary antagonist of the Milky Way Wishes game in Kirby Super Star. He appears as a boss in Super Smash Bros. Ultimate.


Marx confronting Kirby in Kirby Super Star Ultra.

Marx made his debut as a major character in the Kirby Super Star game Milky Way Wishes. In the game, Marx asks Kirby to gather the power of surrounding stars to awaken the giant comet, Galactic Nova in order to make the sun and moon stop fighting. Once Kirby finds and awakens Nova, Marx appears, knocks Kirby out of the way, and asks Nova for the ability to rule Pop Star. Nova grants Marx's wish, causing him to become larger and grow crystal wings. After Kirby defeats him, Marx is sent flying into Nova, with the impact causing them to explode.

Marx appears as the final boss of Milky Way Wishes, and, effectively, of Kirby Super Star as a whole. He also appears as the final boss of The Arena sub-game. In The True Arena sub-game from Kirby Super Star Ultra, Marx's unconscious body absorbs the remaining energy from Nova, transforming him into Marx Soul.

In addition to these appearances, Marx appears as the final boss in the Kirby Mass Attack sub-game Kirby Brawlball, and as both a playable character and a secret boss in Kirby Star Allies, being fought during the credits sequence of the Heroes in Another Dimension sub-game.

In Super Smash Bros. Brawl and Super Smash Bros. 4[edit]

While Marx does not make an appearance, a remix of the theme that plays when fighting him in Kirby Super Star, Vs. Marx, appears in Brawl and Smash 4 as a music track.

In Super Smash Bros. Ultimate[edit]

Marx's boss theme from Brawl returns as a music track.

As a boss[edit]

Official render of Marx.
Marx (True Form) as he appears in Ultimate.
The location of Marx in World of Light.
Marx's location in World of Light

In Ultimate, Marx appears as a boss at the end of Kirby's, Rosalina & Luma's, and Inkling's Classic Mode run, as well as in Adventure Mode: World of Light. Sephiroth also faces Marx during his Classic Mode, as with other regular bosses in the game, though in the third round. Normally, Vs. Marx plays during the battle, but Calamari Inkantation plays in Inkling's route, and Galeem / Dharkon plays during the boss rush in the final stage. His voice appears similar to the one heard in Kirby Star Allies. His battle takes place in the Mysterious Dimension, which is in The Dark Realm.

Marx's boss fight starts off with him using the moves that he similarly used against Kirby in Kirby Super Star. When the fighter gets close, he will teleport some distance away from them. Marx has three moves that he didn't have in Kirby Super Star or Kirby Super Star Ultra: an attack where his eyes turn black and black balls spawn from them, an attack where he creates vein-like growths, and an attack where his eyes enlarge and fire lasers.

Upon defeat, Marx screams and starts flying around the stage sporadically. His wings break off as he reverts to his smaller form and lands face first on the ground. His body also temporarily alights in a purple flame that rises out of him just before the screen fades out.

An icon for denoting incomplete things.
Move Damage Description
4-Way Cutter Attack
Sends out four Cutter boomerangs from his body that all circle back to him. At low health, he'll perform this move twice in a row, a reference to when Marx Soul does the attack. The blades can be reflected or eaten. This attack is referred to as Shooter Cutter (シューターカッター) in the Kirby series.
Extra-Thick Laser
Marx teleports to the player's vertical position. He charges up and fires a laser that crosses the entire stage. This attack deals darkness damage. Can not be shielded, but can be armored by attacks such as Kirby's Stone. This move is referred to as Marx Cannon (マルク砲) in the Kirby series.
Ice Bomb
Floats to the top of the screen and drops a large ice ball. The ice ball explodes into two icy shockwaves when it reaches the player's current vertical position, spreading out horizontally and freezing the player on contact. It can be reflected or eaten. The icy shockwaves can also be absorbed. This move is referred to as Ice Ball (アイスボウル) in the Kirby series.
Makai Plant
Flies offscreen and drops five to seven seeds that disappear into the ground. Afterwards, large, thorny vines will grow upward from where the seeds landed. At low health more seeds will fall; they will also fall and grow faster. Unlike in Kirby Super Star and Kirby Super Star Ultra, shielding the seeds does not destroy them. This move is referred to as Seed Attack (シード攻撃) in the Kirby series.
Jump Out of the Ground
A shadow appears on the ground and follows the player. After a bit of time, the shadow doubles in size and Marx flies out of it. Marx often uses this attack after using another attack that puts him offscreen, doing so more frequently at low health. This move is referred to as Shadow Upper (シャドウアッパー) in the Kirby series.
Black Hole
Splits in two, opening a Black Hole that will attempt to absorb the player. If the player gets caught, they will take massive damage and get spiked into the ground. Marx prefaces this attack with three teleports from side to side, until stopping at the exact center of the screen. Marx can be damaged prior to splitting but is intangible afterwards.
Tracking Eye
Marx's eyes go completely black, then black balls come out of them and start bouncing around the stage, dealing darkness damage to the player if they hit. At low health, Marx will spawn more black balls, up to 6.
Capillary Expansion
Moves to the middle of the screen and retracts his wings, where pink, branching appendages resembling blood vessels grow out instead, spreading across the screen and dealing fire damage to the player. The attack is vertically mirrored. There are two variations: one in which the appendages fill the center bottom of the screen while leaving the corners untouched and vice-versa.
Compound Eye Laser
Grows large compound eyes that send out multiple laser beams from the eyes. The lasers are evenly spaced from each other but have a random rotation. This attack deals electric damage. At low health, more lasers will be sent from each eye.

As a costume[edit]

Marx's hat as Mii Fighter headgear.

Marx's hat is available for the Mii Fighters in the shop.


Marx also appears as two different primary spirits.

Marx can be obtained by defeating the boss in the Mysterious Dimension sub-dungeon in World of Light.

Marx (True Form) can be obtained by enhancing the Marx spirit at level 99.

No. Image Name Type Class Slots Base Power Max Power Base Attack Max Attack Base Defense Max Defense Ability Series
SSBU spirit Marx.png
★★ 3 1588 6355 1001 4004 587 2351 Can Be Enhanced at Lv. 99 Kirby Series
SSBU spirit Marx (True Form).png
Marx (True Form)
★★★★ 3 4354 10886 2533 6333 1654 4135 Magic Attack ↑ Kirby Series


In other languages[edit]

Language Name
Japan Japanese マルク, Marx
UK English Marx
France French Max
Germany German Max
Spain Spanish Marx
Italy Italian Mark
China Chinese (Simplified) 魔噜酷, Marx
Taiwan Chinese (Traditional) 魔嚕酷, Marx
South Korea Korean 마르크, Marx
Netherlands Dutch Marx
Russia Russian Маркс


  • Marx is the only boss to be fought in Adventure Mode that does not have an area themed after his game of origin. His area appears to be a destroyed variant of various locales in the World of Light, as opposed to Planet Popstar's moon, on which he is fought in Kirby Super Star. His boss arena appears visually similar to its original appearance, however.
  • Just like in his original boss fight, players can avoid his giant laser beam by ducking under it.
  • Marx is one of three universe-representing regular bosses who had not appeared in previous Smash games; the other two are Dracula and Rathalos.
    • Marx is the only first-party boss with this distinction, as Dracula and Rathalos were made by Konami and Capcom respectively.
  • Marx is the smallest boss fought in the game, as his wings lack hurtboxes and he appears even smaller than numerous fighters.
  • Marx's arrow attack is his only attack from his original boss fight in Kirby Super Star to not appear as an attack in his Smash boss fight.
  • Marx is the only boss in the World of Light whose primary spirit is not classified as a Neutral type; instead, Marx is a Grab-type Primary spirit.
  • According to Masahiro Sakurai in "Mr. Sakurai Presents: Sephiroth", Marx was initially a lot creepier and was not suitable for all audiences, so he had to be softened.[1] It's unclear if he was referring to how Marx looked during the development of Ultimate or to his original appearance in Kirby Super Star.


  1. ^ Nintendo UK (December 17, 2020). Super Smash Bros. Ultimate – Battling with Sephiroth (Nintendo Switch). YouTube. Retrieved December 17, 2020.