BowserS5 HQ
Also Known As: King Koopa
King of the Koopas
King Bowser
Gender: Male
Series: Super Mario Brothers
Stupid Mario Brothers
Home World: Mushroom Kingdom
Allies: Ganondorf
Nox Decious
Blaire Vherestorm
Scott Masterson
The Darkness (formerly)
Enemies: Mario
Donkey Kong
Ash Ketchum
Solid Snake
Johnny Cyclops
The Darkness
Debut: Act 1 Part 1
Conclusion: The Super Mario Brothers
Status: Killed in Action
Portrayer: Actors who have portrayed Bowser
Luigi: "Why did you come back, Bowser?"
Bowser: "I made a deal with Ganon. He's gonna help me take complete control of the Mushroom Kingdom."
Luigi: "Always the desire to conquer, but what do you intend to do with the Mushroom Kingdom once you have it?"
Bowser: "I'll be king! It'll be mine, and people will obey me, and stuff!'"
— Luigi questioning Bowser's motives

King Bowser is the King of the Koopas and one of the main antagonists of Stupid Mario Brothers. He is Mario and Luigi's arch-nemesis, one of Ganon's former henchmen, and Kamek's boss. Bowser joined the Legion of Villains when he was promised control of the Mushroom Kingdom.

He was the unseen main antagonist of Season One as he was only heard as a voice and did not make his appearance in Season One, the tertiary antagonist of The Movie, and the tertiary antagonist of Season Five.



Bowser is the King of the Koopas and has been for many years.

It is unknown exactly when he was enlisted by Ganondorf Dragmire, but it can be presumed that it was many years before Mario and Luigi were born. Subsequently, Bowser viewed the discovery of the two descendants of Merlin and Nox Decious as a threat to him.

Bowser met with Decious at his hideout in the Real World to discuss this. Decious expressed his intent to destroy the plane on which the family was taking a vacation, but Bowser put his faith in his adviser Kamek to see to it that the plane was destroyed. Kamek succeeded in his mission; however, Merlin was fortunately able to rescue the two children from the explosion and teleport them to Yoshi's Island. Kamek managed to kidnap one of the children, but the other one ended up in Yoshi's possession. The dinosaur was able to rescue both children and bring them to Merlin.

When Mario and Luigi ended up in the Mushroom Kingdom, Bowser made it his goal to destroy them. He took to constantly kidnapping Princess Peach and making the duo go through several levels in his castles to save her.

After many years of this, the Mario Brothers finally chose to take a vacation back in the Real World and have fun while ignoring Bowser's constant letters begging Mario and Luigi to return.

Season OneEdit

Throughout the season, Bowser constantly sends letters to Mario and Luigi, telling them to come back to the Mushroom Kingdom because he is extremely stressed out and bored without them.

His first letter said he had once again captured Peach and took over the Mushroom Kingdom and he tells Mario and Luigi there is nothing they can do to stop him and proceeds to laugh evilly. King Bowser also sent his henchman Wario to the Real World to forcefully bring the Mario Brothers back to the Mushroom Kingdom in case they refused and commanded him to fight them if that was the case. Later, Bowser sent his other henchman Waluigi to assist his brother Wario since he hadn't captured Mario and Luigi yet.

In "Special Delivery from a Guy dressed in Brown," Bowser hires FedEx to prevent UPS from delivering a package to Mario and Luigi. Once FedEx fails, Bowser announces he will come after him. Later, he tells Wario and Waluigi to defeat the Mario Brothers, as well as informing FedEx that he won't kill him if he assists them.

Season TwoEdit

Bowser's Hideout

Bowser firing Wario

When Wario returns to Bowser's hideout to seek forgiveness for once again failing to get Mario and Luigi back to the Mushroom Kingdom, he screams at Wario and immediately fires him, having become tired of hearing about his constant failures. Wario tries to ask for another chance, but Bowser has already lost all faith and trust in his former henchman and orders him to leave him immediately. Disappointed and heartbroken, Wario reluctantly does so.

Afterwards, Link tells Mario his theory is that Bowser brought Nox Decious back to life and teamed up with Ganon. Soon, Decious says to Mario that Bowser works for him.

Stupid Mario Brothers: The MovieEdit

Act IEdit

Once again, Bowser sends a letter to Mario and Luigi, asking them to come back to the Mushroom Kingdom. After the duo refuse again, Bowser decides that since they won't come to him, he will come to them.


Bowser arriving in his first human form

At his hideout, he tells Kamek to cast a spell on him that will make him look like an average human being. Kamek does so and Bowser comes out of his hideout with a human appearance. Unfortunately, the spell didn't give Bowser the ability to speak English. However, Kamek had thought ahead and has bought the Koopa king a DVD before coming to a website called Hooked on Phonics, which he guarantees will teach Bowser how to speak proper English in 3 weeks or less. Bowser then runs off with Kamek to learn how to do so immediately. ("Act I Part 1")

Later, Kamek is doing his best to teach Bowser the English language by using Hooked on Phonics. Despite having some difficulty, Kamek decides his boss is ready to start watching Sesame Street to learn English.


Bowser with his teddy bear

Despite having some difficulties, Bowser is finally able to speak fluent English and confronts Mario and Luigi shortly after they leave the printer shop. However, before they get a chance to battle, Ash stupidly mistakes Bowser for a Pokémon and throws a Pikachu at him, which distracts him long enough for Mario and Luigi to slip away unnoticed. ("Act I Part 2")

Afterwards, Bowser schedules a battle with Mario and Luigi, but he is actually 5 minutes late due to his faulty watch. He asks Kamek to buy him a new one; but they are stopped from doing so when an evil sentient lawn mower attacks Mario and Luigi and chases them off. In a rage, Bowser suddenly starts growling out of anger and frustration at the cost of losing his ability to speak English. ("Act I Part 4")

Act IIEdit


Bowser battling Mario

Bowser is seen battling Mario. During the battle, Mario launches a fireball at him, which makes Bowser surrender. He then calls Kamek (who was battling Luigi) and they retreat so they can prepare for the next battle.

On the way to his hideout, Kamek eats some prunes, which causes him to have terrible diarrhea. As King Bowser waits for Kamek, the Darkness appears. He questions why Bowser helped Nox Decious to destroy the Real World and the Koopa king reveals that if the Real World was destroyed, Mario and Luigi would have to go back to the Mushroom Kingdom. The Darkness then gives Bowser two options: He can join him to create an evil world or he can go back to the Mushroom Kingdom. Bowser claims that the Darkness' plan is beyond evil and leaves, telling Kamek to meet him at the portal when he is done. ("Act II Part 1")

Eventually, King Bowser and Kamek meet at his hideout. He tells Kamek how happy he is to leave the Real World and return to his henchmen. However, before they leave, Bowser notices that Teddy is missing. Kamek reveals that he accidentally incinerated Teddy because Teddy happened to be in the building that Bowser told him to incinerate. The Koopa king tells Kamek that he will be punished until he buys him a new bear. Then they use the portal and leave the Real World. ("Act II Part 2")

Season FiveEdit


Bowser's second and current human form

Bowser returns to the Real World to join Ganon's army. Kamek also uses a spell to make Bowser taller than last time so he can tower over and defeat Mario and Luigi. Bowser then asks Kamek if he gotten a new Teddy, to which he replies no; so the Koopa king sends Kamek to do so.

Later, Bowser meets Luigi, only to wind up arguing with him about his plans for the Mushroom Kingdom. He then summons ninjas to fight Luigi (and later, Donkey Kong and Ness). King Bowser overlooks the fight, then leaves after the ninjas are defeated. ("Dark Dookie")

He then asks Ganon about the placement of ninjas in the Mushroom Kingdom, which he replies that Bowser will have to wait. ("32 bit stealth training")

He, along with the other members of the Legion of Villains who are waiting for Mario and the others to come to them, get tired of waiting and start to question the plan. However, they do arrive and Bowser makes fun of Luigi again for being a sidekick. He and Luigi then have a staredown before their battle begins. ("PIRATES VS NINJAS!") Bowser and Luigi fight hand-to-hand in the battle, ending with Bowser overpowering him and laughing triumphantly. ("Shadow Scum VS Ganon....Or Ganondorf...Whatever his name is!")


Bowser scolding Kamek for still not buying him a new bear

Bowser meets with Kamek by his old hideout. Kamek reports his failure at getting Bowser a new bear. However, the Koopa king disregards this, believing that he'll have won the war by the time that Kamek does, now treating Kamek much more violently. Bowser instructs Kamek to wait by the portal until he returns, which he claims will be after the war is over. Despite this, it is apparent by King Bowser's behavior towards Kamek that his confidence in their victory is wavering, having lost so many League members. ("A "Brief" Meeting")

Later, he denies Nox Decious' proposal for him to join his plot to take down the Darkness since he is loyal to Ganon. He then promises to keep the attack a secret and informs Decious about them having to meet up with Ganon. Bowser then at the meeting states that they have lost 3 members while Decious points that they are the strongest. However, Ganon explains that the loss of them was really part of his plan, and decides to explain to them two basics; when Bowser asks about the second basic part of the plan, Ganon states that it will be revealed soon. ("Imported Sunflowers")

Bowser later meets with Ganon again, asking him what the second part of the plan is. Ganon explains to Bowser that he knows about Decious plot to take down the Darkness and instructs Bowser to fight and kill Luigi while the others are busy fighting ninjas. Bowser obeys and leaves for the southern field, where Ganon says that Luigi will meet him. ("Fantasy Wizard Bullsh*t!")

As Ganondorf predicted, Luigi confronts King Bowser at the field. Neither of them refuse to let the other run away during

Luigi battling Bowser

this fight, not stopping until one of them is beaten. After a conversation, the two begin their fight. Bowser uses his fire breath and superior strength to gain the upper hand against Luigi and is even capable of blocking one of his fireballs. Eventually, Bowser is pinned down and wrestles on the ground with Luigi, hitting him in the face with his fire breath to force him off. Bowser stands over Luigi, declaring his victory, but a determined Luigi rises. The two face off in a battle of strength, when King Bowser begins to charge his fire breath again. However, before he can fire it, Luigi closes Bowser's mouth, making the fire burst in his mouth and knock him down. Luigi orders Bowser to go back to his castle or else he will kill him, so the Koopa king grudgingly agrees.



Bowser and Kamek going home

In the ending montage, Bowser is shown trudging back to his hideout and returning to the Mushroom Kingdom with Kamek through the portal there.

Super Mario: The Plumber Knight ReturnsEdit

20 years prior to the start of The Plumber Knight Returns, Bowser kidnapped Peach again though this time, he killed her. His actions led to Mario finally killing him once and for all by ripping his head clean off. His death was watched by his son Bowser, Jr., which set off a chain of events leading towards the death of Luigi and the rise of the Blue Hood. 


Bowser is a villain of pure evil. Bowser can get extremely angry and violent-tempered easily and doesn't like it when his henchmen or employees (such as Wario and Waluigi) fail him.

However, before Season 5, he has a childish personality and often shows a lack of intelligence and foresight. Because of this, being second-in-command to Ganon is more suitable to him.

In Season 5, he becomes much crueler and more intelligent, treating Kamek poorly. He also becomes more patient able to wait until Ganon can help him take over the Mushroom Kingdom.

Abilities / SkillsEdit


Bowser breathing fire

Bowser has the ability to breathe fire and is exceptionally strong, even in his human form. He is shown to be skilled in hand-to-hand combat, taking down Luigi with little difficulty.


  • In Season Five, Bowser is played by Austin Stevenson due to Josh Kling being unavailable since he moved sometime after the film.
  • Ash mistook Bowser for a Pokémon in "Act I Part 2" of the film, even though Bowser looked like a human being (due to being transformed by Kamek). This may be because of Bowser's look as a human.
  • At the beginning of Season Four, Mario's dream claims that his address is 78910 Volcanic Highway, Bowser's Lair, Mushroom Kingdom.
  • During Bowser's opening appearance in "Act 1 Part 1," part of the fireworks backfired and went in his eye. This can be seen in the bloopers.
  • In "A Band that is better than the Jonas Brothers!", Bowser stated in a letter that he ate a Goomba. Mario then says, "Imagine being in Bowser's digestive system!". A year and a half after the episode was released, Mario and Luigi: Bowser's Inside Story was released; the majority of Mario and Luigi's role in the game takes place inside Bowser's body.
  • Bowser is the only main antagonist in the series to survive.
  • In the series finale, King Bowser is played by Austin Stevenson, but Rich Alvarez performed the voice for the scenes where Bowser did not have his speaking abilities yet.
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