Morton Koopa Jr. is the second youngest of the seven Koopalings and a recurring antagonist and boss in several Mario games. He also appears in two Mario cartoons where he is known as Big Mouth Koopa. He also appears in a Japan exclusive Mario anime where he goes by his real name.


Super Mario Bros. 3

Morton is the second Koopaling to be fought. He is encountered in an airship at Desert Land. His fighting style is similar to that of his younger brother Larry. Once defeated, he runs off, leaving behind the wand he used to transform the king of Desert Land.

Super Mario World

Again, Morton is the second Koopaling to be fought. He is fought in a room where the walls are slowly closing in, and often comes onto the ceiling. To defeat him, as in Super Mario Bros. 3, Mario must jump on him three times. Once defeated, he spiraled into the distance and exploded in a cloud of smoke.

Mario & Luigi: Superstar Saga

Morton returned in Mario & Luigi: Superstar Saga, working for Bowletta in Bowser's castle. As usual, he is the second Koopaling to be fought. Once defeated, he apparently dies like the others, and vanishes.

Super Princess Peach

Although not actually seen in the game it was revealed that Morton along with his other siblings (excluding Bowser Jr.) were to make an appearence in this game but were taken out for no apparent reason. Every one of the Koopalings had their own complete sprite sheet.

New Super Mario Bros. Wii

Morton reappeared in New Super Mario Bros. Wii. This time, he is the sixth Koopaling to be fought, and is not the boss of a desert land, but a mountain land. Like the others, he is fought twice per level. The second time he is fought, Kamek casts a spell on the floor so that whenever Morton pounds the ground, the two parts of the ground on either side of him will go up and touch the ceiling, crushing anyone who is standing on it at the time. Once defeated, Morton fell off the screen, but survived, as he was seen alongside Bowser, Bowser Jr., and the other Koopalings, before Bowser's castle fell on top of them and crushed them.

Mario Kart 8

Morton and all of the other Koopalings made their first appearance as playable characters in Mario Kart 8. Morton and Roy were the only two Koopalings to be in the large class.

Super Smash Bros for Wii U and Super Smash Bros for Nintendo 3DS

Morton (SSB4)

Morton Koopa Jr. as Bowser Jr.'s alternate costume in Super Smash Bros for Wii U and Super Smash Bros. for Nintendo 3DS.

Morton Koopa Jr. has been confirmed to be an alternate costume for Bowser Jr. in the video games; Super Smash Bros. for Wii U and Super Smash Bros. for Nintendo 3DS.


Morton is the only of the seven Koopalings who has a black skin instead of the yellow one. His head is white with a black star on his left eye. His snout is light pink like his brothers, his shell is black and his stomach and feet a are padded.

In Super Mario World, he has a Green sheel and a Green Head and Orange Skin


  • Morton's name is derived from Morton Downey Jr.

See Also


           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 | King Boo | King Bob-omb | Petey Piranha | Torkdrift | Goombas | Boos

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

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

Elder Princess Shroob | Princess Shroob | Commander Shroob

Count Bleck's Minions
Count Bleck | Nastasia | O'Chunks | Mimi | 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

Antasma | Army Dillo | Belome | Bonechill | Brobot | Broodals | Cackletta | Chuckolator | Cortez | Count Bleck's Father | Dark Star | Dimentio | Dino Piranha | Donkey Kong | Doopliss | Draggadon | Eely-Mouth | Fawful | Gooper Blooper | Grubba | Kent C. Koopa | Necky | Wizpig | Kaptain Skurvy | Mechawiggler | MegaBug | Mollusque-Lancuer | King Kaliente | Nabbit | Peewee Piranha | Phantom of the Bwahpera | Rabbids | Rabbid Kong | Ruined Dragon | Tatanga | Sunnycide | Squizzard | Viruses | Waluigi | Wario | Wracktail | Wingo