Huh?? Hmm?!!? Mmmmm!!!!?! What kind of gween donkey is dat? Looks wyke fun! Me wanna ri-ide!!! MINE!! MINE!!!
~ Baby Bowser to Yoshi.
Ahh...nothing quite like good cookies and some evil milk.
~ Baby Bowser

Baby Bowser is an major antagonist in the Mario videogame series and the main antagonist of the Yoshi series. He made his first appearance in the 1995 game Super Mario World 2: Yoshi's Island as the main antagonist. He is a version of Bowser in his youth and is not to be confused with Bowser Jr., who in turn is Bowser's only child. He is also Yoshi's and Baby Mario's arch-enemy.

He is voiced by Caety Sagoian (who also voices Bowser Jr.)


All of Bowser's defining characteristics were already present in his baby form, albeit in a much less threatening way. At this young age, Baby Bowser was more of a bratty and spoiled child than an actual villain and the main motivations behind his actions are either self-preservation or just a general attempt to cause mischief.


Super Mario World 2: Yoshi's Island

Kamek's actions in this game were driven by a prediction of Baby Bowser's future, where he saw that Mario and Luigi will defeat him in many of his future endeavours (which became true on countless occasions). Baby Bowser makes his first physical appearance as the final boss of Super Mario World 2: Yoshi's Island. Appearing at the end of his castle as Kamek demands Yoshi to hand Baby Mario to him, Baby Bowser complains at the current noise, crushes and throws Kamek aside, and demands to ride the "gween donkey." His first battle has him use a ground-pound to make shockwaves, and he can jump on Yoshi's back if Baby Mario is thrown off. After the tiny tyrant is beaten, Kamek uses his magic to make him grow to a gigantic size. 

The second phase begins in what remains of his room. The now massive tyke sends down debris to destroy part of the floor, breathes fireballs, and stomps his way to Yoshi. If Baby Bowser gets too close to Yoshi, he destroys the ground, sealing Yoshi's face. The player must get the large eggs the Baron Von Zepplin's carry to throw at Baby Bowser. After this in done enough times, he returns to his normal size and is defeated. Scooping up the young ruler, Kamek swears revenge on Yoshi, as Yoshi gets to the stork to deliver Baby Mario to him. 

Yoshi's Story

In this game, Baby Bowser swipes the Super Happy Tree to rob the land of joy and turns the island into a pop-up book. At the end of their journey, they find Baby Bowser in his castle, challenging the Yoshi's to a duel. In the battle, Yoshi must shoot Bob-ombs at Baby Bowser as he rides him. In the second part of the battle, Baby Bowser attacks by shooting fireballs, throwing bombs, and making shock-waves. After several more hits, the young tyrant surrenders, weeping as he's carried back by his Toadies and saying that the fruit didn't taste good regardless. 

Yoshi's Island DS

In Yoshi's Island DS, Baby Bowser is relaxing in his fortress when his adult version warps in, wanting to steal the star children to control the universe. Stolen by the future version of Kamek, Baby Bowser gets kicked out for insulting his older self. 

In the fall, he vows vengeance and shouts that both versions are the same, to no avail. Noticing Baby Mario, he tells him he saw his brother in Bowser's Castle. After this, he teams up with Yoshi for the world to "kick some major enemy butt, of course!"  With Baby Bowser, Yoshi trades his ability to swallow his foes for having Baby Bowser being able to spit fire, defeating his foes and melting ice. He leaves when Big Guy the Stilted is defeated, and tries to hitchhike on Future Kamek's broom, only to fall from a weak grip. 

Later, he rejoins Yoshi's party with Baby Bowser later rejoins Yoshi's group with Baby Wario, but betrays the group when they get to Bowser's Castle, thinking they want his treasure. After a small fight, a defeated Baby Bowser is carried back by Kamek. After Bowser is defeated, Baby Bowser falls on a large collection of money, fighting over it with Wario. 

Yoshi's New Island

Baby Bowser returns in this game after not being seen for 7 years, wanting to turn Egg Island into a resort. At the end of the game, a similar scene of him awakening from slumber and fighting Yoshi begins, with him turning giant after. After he is beaten, his future self reappears, making Yoshi defeat him.

Yoshi's Woolly World

In this game, Baby Bowser wants to have enough yarn to make himself a castle. In this battle, Yoshi must attack Baby Bowser by throwing a yarn ball at him and then ground-pounding him. After the first phase, Kamek makes him a giant using the Wonder Wool. In this phase, Yoshi must unravel giant yarn balls to get smaller yarn balls to throw at eight weak-points, shown as magenta Wonder Wools on Baby Bowser's body. After this, Baby Bowser is taken back by Kamek to the moon, before Kamek is scared by Poochy, causing him to drop the tyke. 

Yoshi's Crafted World

Baby Bowser and Kamek are once more the main antagonists in Yoshi's Crafted World. In this game, he steals the Sundream Stone with Kamek, wanting to find the five Dream Gems from it. However, Baby Bowser joins Kamek in the quest, dismantling the train in the first level and making the bosses. He is also the final boss of the game, with his phases being inside a large robot and then growing to a large size once more.

Mario & Luigi: Partners in Time

Baby Bowser currently makes his only appearance in the Mario & Luigi series in Mario & Luigi: Partners in Time as the secondary antagonist. First appearing to try and snatch Baby Peach, only to be defeated by the Baby Mario Brothers. However, Shroobs attack Peach's Castle immediately after this, ironically forcing Baby Bowser to save everyone on his Koopa Cruiser. The Koopa Cruiser is pursued by the Shroobs and passes over Hollijolli Village, where Baby Bowser rescues the adult Mario Bros. (who have been sent back in time), but he only does this to stop Baby Peach's crying.

When everyone is on board, Baby Bowser gets a message from Princess Shroob, who destroys the Koopa Cruiser, which crash lands the young tyrant back into his fortress. Both versions of the Mario Bros. team up and take the first Cobalt Star piece from a treasure chest his castle, which angers the young prince and causes him to betray them. Tracking down both versions of Mario Bros. to the Vim Factory, he steals the two Cobalt Star Shards out of revenge.

Later, Baby Bowser heads to Yoshi's Island with Kamek, where he hoards a large pile of Yoshi Cookies. After heading to the other side of the peak of the mountain he is on, the Baby Brothers devour the Yoshi Cookies, much to Baby Bowser's fury. The Bros fight Kamek, who is defeated as the young prince runs off. Baby Bowser is cornered and devours the Cobalt Star Shards as revenge, before all parties being ironically eaten by Yoob. Inside the beast, Baby Bowser is put inside a Yoob Egg. After the brothers defeat Sunnycide, Baby Bowser is freed with the other Yoshis.

Back on the island, he lies about the scenario, saying that he was the one who saved them. Praising him as a hero, the Yoshi's give him all their cookies. As the Mario Bros. and Toadbert inform them about the truth, Baby Bowser gets sick on the cookies, upchucking the Cobalt Star Shards before the pieces knock him into the sky.

Baby Bowser later reappears in Thwomp Volcano, where he meets his future self, who has been sent back through the time portals. The two Bowsers do not recognize each other and argue, but team up after discovering their mutual hatred of the Mario Bros. After being defeated by the Mario Bros, they are thrown upwards by a Thwomp Elevator. As Bowser falls back through the time portal, Baby Bowser shouts he will become more stronger and more evil than his future self before landing on the Shroob Mothership.

He then returns after Princess Shroob is defeated to once again claim the Cobalt Star for himself. Although he is warned, he puts together the Cobalt Star Shards, freeing Elder Princess Shroob, who turns him into a poison Shroob Mushroom. After the alien monarch is defeated, the unconscious Baby Bowser is transformed to normal by Baby Luigi's tears, accidentally providing the cure to save the Mushroom Kingdom. In the end, Baby Bowser returns to his castle with Kamek, lamenting about his lost treasure.

Other Appearances

Super Smash Bros.

In Super Smash Bros. Melee, Baby Bowser appears as a Trophy. In Super Smash Bros. Ultimate, Baby Bowser appears as a legendary neutral-type primary spirit. His spirit battle is a Stamina battle against a tiny Bowser on the Ω form of the Find Mii stage covered in a lava floor. Once defeated, a giant Bowser with super armor appears.

Powers and Abilities

Most of Bowser's defining abilities (namely the strength and fire-breath) are already apparent in Baby Bowser although in a much less developed way. However, with the help of his primary Magikoopa, Kamek, he is able to greatly enhance both his size and abilities. Of all the baby versions of the Mario series characters, he seems to be the most developed and is more of a small child than an actual baby. He was also already commanding a large number of minions, despite his young age.





  • Along with Baby Wario, he is the only baby from Yoshi's Island DS absent from Mario Super Sluggers.
  • Baby Bowser is the only boss to be fought at one point without being enhanced by Kamek, the other being Prince Froggy.
  • His official artwork in Yoshi's Island DS has him on the back of a Yellow Yoshi, which is impossible, as where the Yellow Yoshi's are only found in forts, Baby Bowser is never found in there.
  • Baby Bowser is the only baby who isn't voiced by his voice actor for his adult counterpart.
  • The fight with Baby Bowser in Yoshi's Island after he transformed was known for frightening a lot of young children given the boss fight's surprisingly serious and suspenseful tone, final bosses in Yoshi games have notably lightened up to prevent this from happening again.


           TheMario Villains

Koopa Troop
Bowser | Baby Bowser | Count Koopula | Bowser Jr. | Captain Goomba | Chain Chomps | 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 | 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

            Bro Villains

Subspace Army
Ancient Minister | Bowser | Bullet Bills | Duon | Shadow Bugs | 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/Meta Ridley | Porky Minch | 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 | Ganondorf | Incineroar | King Dedede | King K. Rool | Koopalings (Larry, Roy, Wendy, Iggy, Morton, Lemmy, Ludwig) | Meta Knight | Mewtwo | Piranha Plant | Ridley | 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 | 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

Acro | Affinity | Agahnim | Air Man | Akuma | Alraune | Albert Wesker | Andrew Oikonny | Antasma | Aparoids | Aparoid Queen | Arlon | Ashnard | Baba | Baby Bowser | Babylon Rogues (Jet the Hawk, Wave the Swallow, Storm the Albatross) | Balrog | Banzai Bills | Bass | Big Boss | Bio Rex | Birdo | Black Shadow | Blood Falcon | Bokoblins | Blipper | Bloopers | Bombers | Bomb Man | Bonkers | Boos | Boom Boom | Boom Stompers | Box Boxer | Boxy | Broom Hatters | Bugzzy | Bumpety Bombs | Bulborbs | Bullet Bills | Burt the Bashful | Byrne | Cackletta | Calamity Ganon | Camus | Cappys | Captain Syrup | Carmilla | Chandelure | Chaos | Chaos Kin | Chargin' Chucks | Claus | Clubberskulls | Colonel Pluck | Cragalanche | Crash Man | Count Bleck | Count Cannoli | Cut Man | Daphnes | Dark Man 4 | Dark Matter | Dark Mind | Darknuts | Daroach | Deadly Six (Zavok, Master Zik, Zeena, Zomom, Zazz, Zor) | Death | Deathborn | Demise | Demon King Arzodius | Diggernaut | Dimentio | Dive Man | DJ Octavio | Don Bongo | Donkey Kong | Donkey Kong Jr. | Dragaux | Dr. Ivo "Eggman" Robotnik | Drill Man | Dry Bones | E-123 Omega | Edelgard | Eggplant Wizard | EggRobo | Emerl | Erazor Djinn | Father Balder | Fawful | Fiery Blowhog | Fire Man | Flages | Flash Man | Fortitudo | Fynalle | Gaius | Gangrel | Galacta Knight | Galactic Fiend Kraken | Galaxy Man | Guardians | Garon | Gengar | General Guy | Geese Howard | Gharnef | Ghosts | Gleeok | Goda | Gold Bone | Golems (Kirby) | Golems (Dragon Quest) | Gomorrah | Goombas | Gooper Blooper | Gordos | Goro Akechi | Gravity Man | Great Reaper | Grief | Gruntilda | Guts Man | Hades | Hard Man | Hawke | Helmaroc King | Hewdraw | Hooktail | Hoopa Unbound | Hot Heads | Ice Man | Igor | Infinite | Ing | Inspired | Iori Yagami | Iridescent Glint Beetle | Jade Face | Jeanne | Julius | Juri Han | Kalypso | Kamek | Kammy Koopa | Kanden | Karate Kong | Kass | King Bob-omb | King Boo | King Dice | King Dodongo | King Hippo | King Knight | King Olly | Kip | Kludge | Knight Man | Koopa Paratroopas | Kracko | Kraid | Kritters | Kyle Merkulov | Leon Powalski | Lethiniums | Liquid Snake | Loptr | Lord Fredrik | Lurchthorns | Lyon | MB | M. Bison | Magolor | Mahvas | Majora | Malladus | Master Belch | Mecha Ridley | Medeus | Medusa | Megontas | Meta-Knights (Axe Knight, Javelin Knight, Mace Knight, Trident Knight, Blade Knight) | Metal Man | Metal Sonic | Metroid Prime | Mimicuties | Moblins | Mockiwis | Moley | Monoeyes | Mouser | Mr. Frosty | Mr. L | Mr. Sandman | Mr. Shine and Mr. Bright | Mugly | Nabbit | Napalm Man | Natah | Necrozma | Nihilego | Nightmare | Ninja Kong | Noxus | Nruffs | Nutskis | O'Chunks | Octoman | Octoroks | Ornes | Pandora | Panther Caroso | Paper Bowser | Parasite Queen | Paz Ortega Andrade | Peckish Aristocrabs | Phantom Ganon | Pico | Pigma Dengar | Pigmasks | Plague Knight | Plasma Wisps | Plasm Wraith | Pom Pom | Pompy | Poppy Bros Jrs. | Princess Shroob | Quaggled Mireclops | Queen Metroid | Queen Sectonia | Quick Man | Rabbid Kong | Rabbids | Raphael the Raven | Reapers | Redd | Rhea | Revolver Ocelot | Risky Boots | Rockys | Rodin, the Infinite One | Roger the Potted Ghost | Rouge the Bat | Ryuichi and Ryuji | Sagat | Scarfies | Scurvy Crew | Shadow Beasts | Shadow Man | Shadow Queen | Shaft | Shake King | Sheegoth | Shield Knight | Shotzos | Shroobs | Shy Guys | Sidesteppers | Sigma | Sir Kibbles | Skull Man | Skuttlers | Slash Man | Slimes | Smoky Prog | Snake Man | Snowmads | Solidus Snake | Space Pirates (Kid Icarus) | Space Pirates (Metroid) | Spark Man | Specknoses | Specter Knight | Spire | Squeakers | Starmans | Stu | Sword Man | Swooping Snitchbug | Sylux | Tacs | Tatanga | Thanatos | Tharja | The Devil | The Skull | Therion | The Three Mage-Sisters (Francisca, Flamberge, Zan Partizanne) | Tiki Tak Tribe (Kalimba | Gong-Oh | Maraca Gang | Wacky Pipes | Cordian | Banjo Bottom | Xylobone) | Tiki Tong | Top Man | Trace | Turret Tusk | Twinbellows | Twinrova | Ultimate Chimera | Vaati | Validar | Vega | Viridi | Viruses | Vivian | Vorash | Waddle Dees | Waddle Doos | Walhart | Walkys | Wart | Weavel | Wheelies | Whispy Woods | Whomps | Wiggler | Wind Man | Wollywog | Wood Man | Xord | X-Parasites | Yaldabaoth | Yuga | Yveltal | Zangief | Zant | Zero | Zingers | Zoda | Zurees

Billy Kane | Dr. Coyle | Heihachi Mishima | Ryuji Yamazaki | Solon | Springtron | Team Rocket Grunts | Yiga Foot Soldiers

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