Well, I see you've made it at last. Too bad it was all for nothing. Subcon is mine, and there's nothing you can do to stop me!
~ Wart in Super Mario Advance (book)
I am the great Wart. Bah ha ha ha!!
~ King Wart in game

King Wart, also known as Mamu in the original Japanese version, is the main antagonist and final boss of Super Mario Bros. 2, as well as the game it was adapted from, Yume Kōjō: Doki Doki Panic, and BS Super Mario USA. He is a toad-like king and the leader of the 8 Bit Club whose goal is to take over the world of Subcon.

Wart also appears as a supporting character in The Legend of Zelda: Link's Awakening. Aside from video games, Wart appears as the primary antagonist of the Super Mario Advance book and the Cloud Nine comic book, a major antagonist in Super Mario-Kun, and a supporting character in Wart steht unter Strom, Tanooki Suits Me, and the Nintendo Adventure Books


Yume Kōjō: Doki Doki Panic

Mamu appears in a storybook telling the tale of the Muu World, the world of dreams. A mischievous monster, he tampered the Dream Machine, a magical machine made by Muu people so that they can always have good weather by having good dreams. With the dream machine tampered, Muu people began to have bad stormy weathers constantly by having bad dreams everyday. Mamu relished Muu people suffering from bad dreams. He then attempts to conquer the Muu but is defeated by the Muu people, who knew of his weakness to vegetables and used them to stop him.

The storybook was later given to the twins Poki and Piki, by the green-dressed monkey Rūsa gives the storybook. However, the twins enter a quarrel with each other and end up tearing out the final page of the story, thus removing the book's ending where Mamu is defeated. Mamu then appears and kidnaps the two children into the pages of the storybook. The two kids pleaded for help, and Rūsa hurries away. Thus, a family comprised of Papa and Mama, their son Imajin and their daughter Lina jump into the storybook and set off to save the twins and liberate Muu from Mamu's regime.

Mamu fights the family when they reach the dream factory. Mamu can spit five bubbles at the four heroes and can destroy the vegetable projectiles produced by the machine of his room. Conventional attack methods are ineffective against Mamu. The family has to throw vegetables in his mouth when it was open, defeating him after four hits. To make matters worse for Mamu, the game is set the way that all four Imagin Family members must reach the final stage on their own separate and independent adventures: as if being defeated once is not bad enough, this means that Mamu would be defeated by all four members of family, all the while eating total of 16 vegetables, food that he really hates.

After Mamu's fourth and final defeat, the inhabitants are saved, completing the story. Mamu's crumpled body was shuttled away and then properly disposed of. The two kidnapped children are rescued from their cages (with the key being thrown at the cage while Mamu was being beaten offscreen to a pulp by the Muu people) and return with the family back to their world, where the game ends.  

Super Mario Bros. 2

After gathering enough forces, Wart invaded and conquered the Subcon. In response, the citizens of the Subcon contacted Mario and asked for his help to defeat Wart.

Mario, Luigi, Peach, and Toad eventually found their way to the Subcon and fought through Wart's army before eventually confronting Wart face-to-face.

He attacks by shooting/burping out nightmare bubbles at Mario, Peach, Toad, or Luigi (whoever the player faces him as). He does have one weakness. You can grab the vegetables as they come out of the vegetable machine and throw them at Wart when he opens his mouth. If a veggie touches a bubble, it will be destroyed, so a character must time their shots carefully. He hates vegetables, so whenever one is thrown into his mouth, he takes damage. After six hits, Wart will turn to stone and fall off the screen. He is then tossed around and beaten up by the Subcon after Mario and friends release them.

It is then revealed that the entire game was a dream by Mario.

BS Super Mario USA

However, in BS Super Mario USA, it is revealed that the events of Super Mario Bros. 2 really did happen and that Wart and the 8 Bit Club managed to retreat into another dream after the events of the game.

After building up his forces again, Wart invades and conquers the Subcon, forcing the king of the Subcon into hiding. He also steals the golden statues that were placed as thanks for the rescue of Mario and company. In order to stop Wart, the Subcon King contacts Mario and co. requesting their help once again.

The heroes eventually confront Wart once again. Like in his previous appearance, he is defeated by tossing vegetables at him. After he is defeated, Subcon vanishes.

Other Appearances

The Legend of Zelda: Link's Awakening

Under his Japanese name Mamu in the international versions of the game, Wart makes a minor appearance in The Legend of Zelda: Link's Awakening and its Nintendo Switch remake. He can be found beneath the Signpost Maze and will teach Link the "Frog's Song of Soul" for 300 rupees. Mamu cannot be revisited after obtaining the song, as he and his choir went away on tour based on a nearby sign.

Paper Mario: Color Splash

Wart was mentioned by a Toad who supposedly saw him in his dream.

Super Smash Bros. Ultimate

Wart appears in the game as an advanced grab-type primary spirit. His spirit battle is against King K. Rool and Peach on Skyworld with a sleep-inducing floor. Only K. Rool needs to be defeated to win.

Animal Crossing

A frog named Wart Jr. with the cranky personality can become a resident in the player's village.

Literature and Comics

Wart appears as the main antagonist in the Cloud Nine comic. Here, he appears as a businessman who manipulates Mario, Luigi and the Mushroom King during their search for a good bed. Wart manages to trick the Mario Bros. into leaving the King alone, whom he then takes to the top floor of the bed store and presents him the Cumulo-Nimbus Special, a weather-altering, bed-shaped cloud that spreads a sleep aura. The King instantly falls asleep on it, after which Wart proceeds to use him as a power source for the Cumulo-Nimbus, which he sends out to the Mushroom Kingdom.

The entire kingdom is being flooded by the cloud as lightning strikes and hurricanes woosh over the land. Realizing that they've been deceived, Mario and Luigi manage to save the King and stop the Cumulo-Nimbus. They later ambush Wart and blast him off to the Fungus Forest.

Wart appears again in Tanooki Suits Me, where he tries to purchase stolen art from Bowser. Mario, however, tricks Wart into thinking that the art is worthless and that Bowser is double-crossing him. This leads to a fight between Wart and Bowser as Mario returns the art to the museum.

In Wart steht unter Strom, Wart fights Mario in a rage after the plumber stole the batteries of his Game Boy.

Wart is the primary antagonist in the Super Mario Advance book, where he takes over Subcon yet again. After defeating his underlings, Mario, Luigi, Toad and Peach confront him, but Wart effortlessly captures them all with his bubbles, safe for Peach, who barely manages to beat him by pelting the toad with vegetables.

Wart returns once more in Volume 8 of Super Mario-Kun, where he takes over Subcon a fourth time. Now with the ability to shapeshift and transform and immunity to the vegetables he was once weak against, Wart fights Mario and friends yet again. Birdo is lost during the fight, but Wart turns up defeated regardless.

Wart's other appearances are in the Nintendo Adventure Books, where he turned Subcon into a skate park in Doors to Doom and as a guest to Bowser's party in Dinosaur Dilemma


Wart is shown to be proud, rude, menacing, selfish, persistent. His greatest desire is to conquer the dream world Subcon. More likely than not, he would not be satisfied and would take on the rest of the universe. He does not stop, even if he is defeated. This was shown in BS Super Mario USA, when Wart returns to "replace" Subcon's king Osama; in other words he tried again to conquer it, but was defeated by Mario. Yet, Wart is known to be very jealous and possessive of Mario. After his conquests on Subcon, Wart can have an even-tempered and calm attitude, as shown when Link met him. Instead of conquering Kolohint Island, Wart spent most of his time traveling throughout the world and assisting Link on his quest. He even has his two Frof Choir with him.

In the original Doki Doki Panic, Wart/Mamu is shown to be much more mischievous. He snuck into Muu people's dream factory, tampered with Dream Machine, making people having bad dreams and taking a great relish until Muu people bombarded him with vegetables.

Powers and Abilities

Since Wart is a frog, he possesses the abilities that any frog has and especially has affinity with water, able to spit streams of water. Wart can spit bubbles, which can harm and also trap others and incinerate items, as well as powering up his allies.

Wart can also use magic, and put a curse on someone, as revealed that the curse he put on Mario during his sleep did not work according to the Instruction Manual of Super Mario Bros. 2, but he can put a spell on an entire world, and cast spells to alter the landscape, as well as conjure flashes of light to clear entire areas of enemies, turning others into different things and swapping the places of others, or even warping reality.

Wart is nearly invincible; he could not be harmed, not even a bomb will injure him, unless a vegetable is thrown at him six times (four times in Yume Kōjō: Doki Doki Panic). In Yume Kōjō: Doki Doki Panic, Wart is able to rift space-time, shaping a portal to another world, making his hand huge and then extending it to the outside world. Wart can also travel from world to world, wherever he wishes to, including in The Legend of Zelda: Link's Awakening.

Wart can control dreams as well and is immune to destruction powers and being erased from existence, as he remained even after the world he's in is destroyed. Lastly, with the Frog's Song of Soul, Wart can resurrect others and awaken them from every type of sleep and unconsciousness, including eternal.

In Super Mario-Kun, Wart could also transform and shapeshift into various forms. He can also create pocket realities resembling his throne room inside of vases in Subspace, as seen in BS Super Mario USA



  • A frog named Wart Jr. appeared in Animal Crossing, Animal Crossing: Wild World and Animal Crossing: City Folk. It is unknown if he is meant to be a relation or an allusion to Wart, as they do not look similar, and apart from Wart Jr.'s latent desire to take over the world, share nothing in common.
  • In BS Super Mario USA, Wart is said to have fled to another dream in the brief era of peace at the end of Super Mario Bros. 2. This may possibly be an allusion to The Legend of Zelda: Link's Awakening, in which he makes a friendly cameo on Koholint Island.
  • Oddly, Wart mislabeled as "King Koopa", appears in reels B and C in a Master-view toy released during the run of The Super Mario Bros. Super Show!
  • In the original Super Mario Bros. 2 (along with its remake in Super Mario All-Stars), Wart could still hurt the players if they touch his defeated body. In Super Mario Advance, however, he becomes intangible to the players once defeated.
  • In Super Smash Bros. Brawl, one of the names that can be gotten from pressing the "RANDOM NAME" button is "WART".
  • Wart takes two fewer hits to defeat him in Yume Kōjō: Doki Doki Panic.
  • Wart is the only boss character from Super Mario Bros. 2 who never appeared in The Super Mario Bros. Super Show, even though King Koopa's personality is based on Wart, despite being based on Bowser.
  • It is unexplained why Wart has a vegetable-making machine in his throne room, even though he despises vegetables.
  • James Rolfe (also known as the Angry Video Game Nerd) stated that Wart was the worst videogame villain ever in Screwattack's Worst Ever! video on terrible videogame villains.


           TheMario.png Villains

Koopa Troop
Bowser | Baby Bowser | Count Koopula | Bowser Jr. | Captain Goomba | Chain Chomps | Chargin' Chucks | Koopalings: (Larry Koopa | Morton Koopa Jr. | Wendy O. Koopa | Iggy Koopa | Roy Koopa | Lemmy Koopa | Ludwig Von Koopa) | Kamek | Toadies | Kammy Koopa | Paper Bowser | Paper Bowser Jr. | King Boo | King Bob-omb | Petey Piranha | Gobblegut | Torkdrift | Elite Trio | Goombas | Bloopers | Boom Boom | Pom Pom | Boos | Piranha Plants | Burt the Bashful | Salvo the Slime | Roger the Potted Ghost | Red & Blue Goomba | Goomba King | Koopa Bros | Tutankoopa | Tubba Blubba | Shy Guys | General Guy | Lava Piranha | Huff N. Puff | Crystal King | Koopa Kids | Army Hammer Bro

8 Bit Club
Wart | Mouser | Tryclyde | Birdo | Shy Guys

Secret Society of X-Nauts
Sir Grodus | Lord Crump | Shadow Sirens | Doopliss | Shadow Queen

Elder Princess Shroob | Princess Shroob | Sunnycide

Count Bleck's Minions
Count Bleck | Nastasia | O'Chunks | Mimi | Dimentio | Mr. L

Folded Soldiers
King Olly | Handaconda | Paper Macho Soldiers
Legion of Stationery: Colored Pencils | Rubber Band | Hole Punch | Tape | Scissors | Stapler

Smithy Gang
Smithy | Exor | Mack | Bowyer | Yaridovich | Axem Rangers | Blade | Count Down | Domino |

King K. Rool | Kremling Krew | Kritters | Klump | Krusha | Krunch | Klubba

Antasma | Army Dillo | Belome | Best Fitness Friends | Big Guy the Stilted | Black Jewel | Bonechill | Booster | Bouldergeist | Brobot | Broodals: (Topper | Harriet | Spewart | Rango) | Bugaboom | Cackletta | Chuckolator | Cookatiel | Cortez | Count Bleck's Father | Count Cannoli | Croco | Culex | Dark Star | Dino Piranha | Dodo | Donkey Kong | Donkey Kong (Mario VS Donkey Kong) | Draggadon | Fawful | Foreman Spike | Francis | Giga Lakitu | Glamdozer | Gloomtail | Gooper Blooper | Grouchy Possessor | Grubba | Harsh Possessor | Hisstocrat | Hooktail | Jojora | Jr. Troopa | Kaptain Skurvy | Kent C. Koopa | King Croacus | King Kaliente | Lamp Scam Snifit | Lena | Madame Broode | Major Burrows | Mario | Mechawiggler | MegaBug | Midbus | Mizzter Blizzard | Mollusque-Lancuer | Nabbit | Necky | Overset Possessor | Peewee Piranha | Peps | Phantamanta | Popple | Portrait Ghosts: (Neville | Chauncey | Bogmire | Biff Atlas | Boolossus | Sir Weston | Vincent Van Gore) | President Koopa | Prince Pikante | Rabbids: (Phantom of the Bwahpera | Rabbid Kong) | Rawk Hawk | Ricky | Rollodillo | Rudy the Clown | Ruined Dragon | Sabasa | Shadoo | Shake King | Shrewd Possessor | Skellobits | Smorg | Squizzard | Tatanga | Three Little Pigheads | Tolstar | Topmaniac | Tough Possessor | Tower Power Pokey | Valentina | Viruses | Waluigi | Wario | Watinga | Whomp King | Wigglers | Wingo | Wracktail | Wizpig | Yellow Belly/Helio


Big Bad Wolf | "Crime Wave" Clyde | King Koopa | Robot Princess | Wizardheimer

See Also
Donkey Kong Villains | Luigi's Mansion Villains | Wario Villains

            Bro.png Villains

Subspace Army
Ancient Minister | Bowser | Bullet Bills | Duon | False Bowser | False Diddy Kong | False Peach | False Samus | False Zelda | Galleom | Ganondorf | Goombas | Hammer Bros. | King Statue | Koopa Troopas | Master Hand | Petey Piranha | Primids | Rayquaza | Ridley | Porky Minch | Shadow Bugs | Tabuu | Wario

World of Light
Crazy Hand | Dharkon | Dracula | Galeem | Galleom | Ganon | Giga Bowser | Master Hand | Marx | Rathalos

Playable Characters
Bowser | Bowser Jr. | Dark Pit | Dark Samus | Donkey Kong | Enderman | Ganondorf | Incineroar | King Dedede | King K. Rool | Koopalings (Larry, Roy, Wendy, Iggy, Morton, Lemmy, Ludwig) | Mario | Meta Knight | Mewtwo | Piranha Plant | Ridley | Wario | Wolf O'Donnell | Zombie

Crazy Hand | Dark Emperor | Dharkon | Dracula | Duon | Galeem | Galleom | Ganon | Giga Bowser | Marx | Master Hand | Master Core | Metal Face | Petey Piranha | Porky Minch | Rathalos | Rayquaza | Ridley | Tabuu | Yellow Devil

Assists Trophies/Poké Ball Pokémon
Andross | Arceus | Black Knight | Burrowing Snagret | Chain Chomps | Chef Kawasaki | Darkrai | Deoxys | Devil | Dr. Wily | Entei | Elec Man | Ghirahim | Giratina | Ghosts | Gray Fox | Hammer Bros. | Klaptrap | Knuckle Joes | Kyurem | Lakitu | Metroid | Meowth | Mimikyu | Lord Nightmare | Mother Brain | Palkia | Phosphora | Shadow the Hedgehog | Skull Kid | Spinies | Starman | Unown | Waluigi

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