I know, she's not really my Mama.
~ Bowser Jr. after learning that Princess Peach is not his mother.
Someday... when I'm bigger... I wanna fight that Mario again!
~ Bowser Jr. to his father.

Bowser Jr. is the only biological son of Bowser and one of the eight children in his care (not to be confused with Baby Bowser).

Since his debut in Super Mario Sunshine, as the main antagonist, he is the secondary antagonist of the Super Mario franchise, as well as the main antagonist in the New Super Mario Bros. series. He is also a major antagonist in Mario + Rabbit Kingdom Battle. He looks just like Bowser except younger and he constantly wears a bib with fangs drawn on it perhaps to look more intimidating. He seems to be the direct superior to the Koopalings, even though they are older than him.


Bowser Jr. is pretty young, he has a yellow skin like his father, he has small, circular eyes that are black in color. His mouth is wide, puffy and con-vexed, with a large snout, Bowser Jr. has little hands and little feet, which have small white claws, he wears a white bandanna with a drawing of a scary mouth, he also has a four-ribbed padded stomach and padded feet.


Bowser Jr. seems to be very bratty, spoiled, and mischievous. He also seems to be a little bit of a psychopath since he believed that Princess Peach is his mother, however, he is like this because he is raised by his awful father who pretty much made him like this. Despite that, they have a genuine father-son relationship and really care for each other, shown in games like Mario + Rabbids where Bowser calls Junior on the phone to make sure he did his homework.


His first appearance was in Super Mario Sunshine where he tried to frame Mario for crimes he didn't commit. This plot actually succeeded. He took (presumably stole) a magic brush from Professor E. Gadd and used it to turn into Shadow Mario (for framing Mario) and make evil graffiti appear. Mario was instructed to clean up the graffiti and soon defeated Bowser Jr. inside a giant Bowser machine, at which point Bowser Jr. revealed his true identity and that Bowser told him that Peach was his mother.

After Mario chased him out of every world, he fought Bowser in a giant floating hot tub above Corona Mountain. Bowser Jr. sent Bullet Bills after him, but he and Bowser were defeated, and last seen in the middle of the ocean where Bowser told Bowser Jr. the truth about Peach, and Bowser Jr. said he wants to fight Mario again.

Bowser family Ice hockey

Bowser Jr. playing ice hockey with his father in Super Mario Sports Mix.

He has been seen in other Mario games since then. He even appeared as a final boss along with his dad in the New Super Mario Bros. game for the DS. He is the main antagonist of this game; it is he who kidnaps Peach for Bowser, and summons a boss to each level for Mario and Luigi to fight. He is fought in a tower at each level. When Mario kills Bowser by knocking him into the lava, Bowser Jr. takes the bones and eventually brings Bowser back to life (it is unknown how many other times throughout the series he has needed to do this, if any). Bowser and Bowser Jr. fight Mario, but both are defeated and knocked over the edge. Both survive the fall, and Bowser Jr. is last seen dragging Bowser away by the tail.

220px-SMG BowserJr

Bowser Jr. in Super Mario Galaxy.

Bowser Jr. also appeared as a boss fought several times in Super Mario Galaxy. The first time he sends a giant robot named Megaleg after Mario, but Mario destroys it. The second time Mario fights him and his airship, and the third time he merely sends King Kaliente after him. He is also fought three times in New Super Mario Bros Wii (the first game he appeared in alongside his brothers and sister, the Koopalings). The first time he can be jumped on with propeller blades, the second time he must be bumped into electric walls, and the third Mario must stomp the ground to hit a bomb back at him.

He survived his third defeat (Kamek rescued him from the previous two), and was seen alongside the Koopalings helping Bowser back up when Bowser's castle fell over and crushed them.

In the game, Mario & Luigi: Paper Jam, Bowser Jr. meets his paper self and unlike his father, he got along with him. As Mario, Luigi, and Paper Mario defeated both of them in a boss battle, both Bowsers come in to comfort them after they defeat. Both Bowser Jr's lay down in their arms, they both try to tell their fathers about the book, but their fathers hush them as they both said they're delirious. Aside from mainstream games, he has also appeared in spin-offs such as Mario Kart: Double Dash, as a playable character.

Shadow Mario

In Super Mario Sunshine, the Aspect used by Bowser Jr. to incriminate Mario, using a magic paintbrush acquired (presumably stolen) from Professor E. Gadd. He made graffiti all over Delphino Island and framed Mario for such vandalism, making the inhabitants of the island punish Mario by having him clean up all the mess Shadow Mario had created, under the belief that it was Mario who was the real villain.

However, during his cleaning up of the island, Mario soon comes into contact with Shadow Mario, who tries to kidnap Princess Peach and the two would fight on and off throughout the game.

Super Smash Bros. series

Super Smash Bros. 4

Bowser, Jr. (SSB4)

Bowser Jr. in Super Smash Bros. 4.

Bowser Jr. made his debut as a playable character in the video game; Super Smash Bros. 4 for the Wii U and 3DS. He is an unlockable character in the 3DS version, but he is available from the start in the Wii U version. When played, Bowser Jr. uses his Junior Clown Car for combat. The Junior Clown Car contains a large abundance of weapons include; shooting a cannonball out of the mouth, lashing the opponent with it's tongue, retractable robotic arms that contain either drills, or boxing gloves, retractable wheels so Bowser Jr. can ram into his opponents, distribute Mechakoopas, drop two iron balls, and even explode if Bowser Jr. abandon ship. Bowser Jr. also carries a hammer to defend himself when he abandons the Junior Clown Car.

Bowser Jr.'s Final Smash is Shadow Mario. Bowser Jr. transforms into Shadow Mario and uses the magic paintbrush to create an X-shape mark on the screen. Anyone who comes in contact with the mark will be dealt with damage. The effect lasts for a few seconds when the mark explodes and launches everyone touching it. For his alternate costumes; all seven of them alternate are the Koopalings riding the Junior Clown Car; Larry Koopa, Morton Koopa Jr., Wendy O. Koopa, Iggy Koopa, Roy Koopa, Lemmy Koopa, and Ludwig von Koopa.

Super Smash Bros. Ultimate

Bowser Jr. will return as a playable fighter in Super Smash Bros. Ultimate. His moveset is identical to Super Smash Bros. 4, although his Clown Car is slightly faster, and able to consume healing items whenever it sticks out its tongue. The Koopalings are still his alternate costumes and Shadow Mario is still his Final Smash.

Powers and Abilities

Fire breath: Like his father, Bowser Junior is capable of spitting fire in different forms. At first, he was not very good at breathing fire as Mario Strikers Charged shows, where he tries to breathe fire like his father in his entrance, only to breathe smoke and a small flame. That changes in New Super Mario Bros. Wii, where he can breathe fireballs that can accommodate opponents, and creates a large flame of fire when the fireball is in contact with the ground. In New Super Mario Bros. U, he can breathe fireballs consecutively. In Mario & Luigi: Dream Team, he is able to breathe a stream of fire.

Superhuman attributes: Like his father, Bowser. Jr. has superhuman abilities well beyond the average person.

  • Superhuman strength: Despite his young age, Bowser. Jr. has superhuman strength, including a huge strike force. In Super Mario Maker, he has the ability to crush and paralyze remaining opponents on the field, a skill performed by most of the big and strong characters like Bowser, Morton, Roy, and Ludwig. He once again demonstrates his deceptive strength in Mario & Luigi: Paper Jam, where he can easily throw a giant cannonball several times his size at Mario Bros. and Paper Mario.
  • Superhuman Durability: Bowser. Jr. showed high levels of durability to the point of being able to survive imminent death situations. This is evident in Super Mario Galaxy, where he falls into the gigantic sun after his father's defeat, and he is later shown to be back alive in the Mushroom Kingdom, as well as New Super Mario Bros Wii, where he survives after being crushed by Bowser's collapsed castle.
  • Superhuman agility: Bowser Junior, thanks to its small size, is very agile, able to make prodigious leaps.

Magic: Bowser Jr. appears to excel in magic as shown in Mario Super Sluggers where he turned Daisy into a stone statue. This is also supported in Paper Mario: Sticker Star, where he can Paperize, create a defensive shield, and heal.

Mechanics: From his first appearance, he has shown remarkable talent with mechanics and computers, able to skillfully pilot vehicles and giant robots as well as hack emails.





  • The pads of Bowser Jr's feet are similar to Birdo's.
  • Since his name is Bowser Jr., this would mean that his father's real name is Bowser Sr.
  • Bowser Jr. is hinted to be 4-5 years old.
  • Bowser Jr's mother is unknown.


           Mario Villains

Koopa Troop
Bowser | Bowser Jr. | Koopalings: (Larry Koopa | Morton Koopa Jr. | Wendy O. Koopa | Iggy Koopa | Roy Koopa | Lemmy Koopa | Ludwig Von Koopa) | Kamek | Kammy Koopa | King Boo | King Bob-omb | Petey Piranha | Torkdrift | Goombas | Boos | Piranha Plants | Goomba King | Koopa Bros | Tutankoopa | Tubba Blubba | General Guy | Lava Piranha | Huff N. Puff | Crystal King | Cackletta | Fawful | Antasma

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

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

Elder Princess Shroob | Princess Shroob | Commander Shroob

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

Smithy Gang
Smithy | Exor | Mack | Bowyer | Yaridovich | Axem Rangers | Blade | Boomer | Count Down | Cloaker | Domino | Clerk | Manager | Director | Factory Chief

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

Army Dillo | Belome | Bonechill | Brobot | Broodals | Chuckolator | Cortez | Count Bleck's Father | Dark Star | Dino Piranha | Donkey Kong | Draggadon | Eely-Mouth | Francis | Gloomtail | Gooper Blooper | Grubba | Hooktail | Jr. Troopa | Kaptain Skurvy | Kent C. Koopa | King Croacus | King Kaliente | Mechawiggler | MegaBug | Mizzter Blizzard | Mollusque-Lancuer | Nabbit | Necky | Peewee Piranha | Phantom of the Bwahpera | Rabbids | Rabbid Kong | Rawk Hawk | Ruined Dragon | Shadoo | Smorg | Squizzard | Sunnycide | Tatanga | Viruses | Waluigi | Wario | Wracktail | Wingo | Wizpig

           Super Smash Bros. Villains

Subspace Army
Tabuu | Master Hand | Primids | Ganondorf | Bowser | Ancient Minister | Wario | False Peach | False Zelda | Petey Piranha | Rayquaza | Ridley | Galleom | Duon | Porky Minch/King Statue

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

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

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

Assists Trophies and Poké Ball Pokémon
Andross | Arceus | Black Knight | Chain Chomp | Darkrai | Dark Samus | Devil | Deoxys | Entei | Elec Man | Ghirahim | Giratina | Ghosts | Gray Fox | Hammer Bro | Klaptrap | Kyurem | Lakitu | Metroid | Meowth | Mimikyu | Mother Brain | Nightmare | Phosphora | Shadow the Hedgehog | Skull Kid | Starman | Thwomp | Waluigi | Wily Capsule

           One Minute Melee Villains

Akuma | Albert Wesker | Juri Han | Meta Knight | Bowser | Dr. Eggman | Deadpool | Deathstroke | Mewtwo | Frieza | Sakuya Izayoi | Dio Brando | Catwoman | Black Widow | Oni | Scorpian | Wario | Ryu | Vergil | Sephiroth | Baby Bonnie Hood | Bowser Jr. | Metal Sonic | Mecha Sonic | Master Hand | Polygon Man | Sasuke Uchiha | Heihachi Mishima | Geese Howard | Kuma | Godzilla | Cell | Meruem | Broly | Shadow the Hedgehog | Vegeta | Shang Tsung | Goomba | Ivy Valentine | Sasori | Decapre | M. Bison | Rugal Bernstein | Hiei | Bill Cipher | Gaara | Sir Crocodile | Terra