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So guys, what do you wanna do today?
~ Bowser Junior's catchphrase.

Robert Bernard Bowser Junior (also known as Junior) is one of the main characters in SuperMarioLogan. He is Bowser's son and Jeffy, Joseph and Cody's best friend.

Out of all characters in the series, Junior is the most common character. He is mostly the secondary deuteragonist of the entire franchise but he is occasionally the main protagonist. In fact, he seemed to appear more than Mario. However, Mario has currently started to appear more than Junior.

Despite being one of the protagonists, he did multiple villainous acts.

He is mostly voiced by Logan Thirtyacre, but he was also voiced by Chilly Jimenez in Jeffy's BIG Easter!.

In 1 2 Switch Bodies!, he was voiced by Lance Thirtyacre while he was in Jeffy's body. He was voiced by Lovell Stanton in Switching Bodies! while he was in Chef Pee Pee's body.

He first appeared in Mario and Luigi's stupid and dumb adventures episode 6 (season 2) as the main antagonist. After that, Bowser Junior did not appear in the SML series until Bowser Juice Informercial, which was the first time he spoke.

He also appears in a real life series called A Project Guy and then he appeared in Puppet Pals videos.


Bowser Junior is manipulative, energetic, immature, naughty, troublesome, selfish, demanding, whiny, bothersome, racist, annoying, and dimwitted.

Despite acting stupid and immature, Junior became smarter over the next few years, but still acts stupid sometimes and he became more mature.

Despite being occasionally antagonistic, Junior has done several good things, and occasionally feels sorry for his actions.


Early Life

Bowser Junior was born on late September, 2008 to Bowser (June 16 in Bowser Junior's Birthday Cake). However, in SuperPowers 2, it is implied that Bowser adopted him. When he was a baby, Bowser snatched his pacifier, that he was sucking on, out of his mouth. Junior started crying and Bowser forced him to chew on cotton balls and told him not to swallow them or else he would choke. This caused Junior to have Sidonglobophobia (fear of cotten balls).

Powers and Abilities


In Bowser Junior's Allergy!, it's revealed that Junior has Aguagenic Urticaria (although Junior has been on several water places before like Splash Mountain at Walt Disney World). In the end, when Cody tells him that his body is 60% made of water, Junior explodes into water.

Kill Count


  1. Ringo: Crushed by a bowling ball.
  2. Simmons (x3): Burned in an oven in Home Alone, hit with a crow bar in Home Alone 2, and noose around neck in The Purge!. Revived in later episodes.
  3. Chef Pee Pee (x3): Bleach in a Wendy's cup in April Fools!, skull broken by a frozen water balloon in Evil Chef Pee Pee, and killed by the button in The Magical Button! Revived in later episodes.
  4. Sharon: Crushed by a brick wall in Home Alone 2. Revived in later episodes.
  5. Elmo: Shot in the head with a sniper rifle.
  6. Cody (x2: Shot in the eye by a Glock in The Gun!. Also killed with the magic button.Accident and revived in later episodes.
  7. Bowser: Throat slit with a kitchen knife (off-screen) in Bowser Junior's Package!. Revived in later episodes.
  8. Robot Chef Pee Pee: Thrown in the water filled bathtub.
  9. Russian Spy: Shot with a gun pen.
  10. Drawing Jeffy: Got back to his paper and was smashed along with the paper. Revived in later episodes.

11-17. 6 Cody Clones, including Banana Cody. Shot by laservision, causing them to explode into popcorn.


  • 18: Fly (The Fry).
  • Countless caterpillars
  • Countless polar bears in The Mistery Safe!.




  • His song is called "Get Outside" by Jason Farnham.
  • Although his name is Bowser Junior, he is mostly called Junior.


           SuperMarioLogan Villains

Black Yoshi | Boo | Bowser | Bowser Junior | Brooklyn T. Guy | Bubbles | Bully Bill | Bully Bill's Dad | Chica | Crack Bear | Craig the Devil | Evil Croco | David Winkle | Diddy Kong | Does Bad Things Guy | Doofy the Dragon | Drawing Jeffy | Dewey Donedidit | Drug Dealer | Elmo | Evil Chef Pee Pee | Evil Cottonball | Fake Santa | Goodman | Goomba | Goofy | Giant Shrimpo | Hammer Bro | Joseph's Mother | Jeff the Killer | Jeffy | Jeffo | Joseph | Jorge the Drug Dealer | Kamek | Kidnapper | Killer Clowns | Koopa Troopa | Kyle Hoolahan | Killer Whale | Loan Dolphin | Mama Luigi | Mario | Mickey Mouse | Mine! Bird | Mojo Jojo | Mebo | Nancy | Nazi Cheeseburger | Nazi Robot | Principal Steinbeck| Puppet Ken| Piranha Plant| Quiggles | Robot Chef Pee Pee | Ringo | Richard Goodman | Russian Spy | Shrek | Sharon | Sonic | Screwball | Simmons| Shy Guy| Sheila Perkins| Scary Girl| The Rat| The Squirrel| The Turkey| The Alien| The Killer Shrimpo| Thwomp| T-Rex| The Cat In The Hat| The Monster | The Money Thief | The Ouija Demon | The Seeker | The Robber | Wario | Waluigi
Koopa Kids | Pigs

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