"The Kremling gang will take over the World with this thing!"
― King K. Rool in DK: Jungle Climber

King K. Rool is the main antagonist of the Donkey Kong franchise. He is a large Kremling crocodile with a gold crown, he rules over the Kremling Krew and tries to take over Donkey Kong Island. King K. Rool attempted to steal Kong Family members along with Donkey Kong's Banana Hoard. He went by the alias of Kaptain K. Rool being pirate themed in Donkey Kong Country 2: Diddy's Kong Quest and Donkey Kong Land 2 while in Donkey Kong Country 3: Dixie Kong's Double Trouble! and Donkey Kong Land III he went by the alias of Baron K. Roolenstein, which is mad scientist themed.


Physical appearance

King K. Rool is an extremely obese Kremling who, in older games, encases his belly in golden armor. However, in more recent games such as Mario Super Sluggers, K. Rool's belly has no gold on it and simply has a fleshy texture. His face consists of having a large, crocodile-like snout with 8 top-teeth, each one being bigger the closer they are to his nose. his 4 bottom teeth are smaller than any of his top teeth and remain the same size. His two eyes are different from each other, as his right eye is simply a cartoony-looking oval shaped eye with a dotted pupil. His left eye though is much larger and is bloodshot, giving it a much more red appearance. On top of his head, King K. Rool wears a golden crown with circular figures on the tips. His crown was much larger in the older games with much more tips, but in recent games, his crown is smaller with less tippings. He also wear's a large, red cape with a yellow pattern on it. Strangely, in Super Smash Bros. Ultimate, his cape is torn. Is cape is attatched to him by a greenish-blue hexagonal gem. His wrists have golden bands on them.


As his name (a pun on "cruel") may imply, K. Rool is often bossing his minions through threats and intimidation, often punishing them severely when they fail. K. Rool's personality could be best described as: extremely manipulative, highly insensitive, very hateful, sadistic, baleful, cunning, wrathful, power-hungry, tyrannical, brutal, greedy, truculent, pompous and failure intolerant. Even his most powerful followers seem to fear his wrath, as displayed in Donkey Kong 64 when his subtle display of anger results in Army Dillo fainting on the spot. He doesn't seem to respect his henchmen, particularly the Kritters due to their incompetence, although he does seem to have significantly more respect for his Klaptraps and uses them to push his minions around despite them being smaller. In Mario Super Sluggers, he calls brown Kritter "the dirty under-belly of the Kremling Krew". Despite all of this, however, he and the Kritters have good chemistry with each other in Mario Super Sluggers.

K. Rool is also a somewhat dirty and dangerous fighter. He fakes defeat, often collapsing in the middle of combat and making it seem like he has been defeated, only to rise seconds later and begin fighting again.

He seems to hate the Kongs, calling them "filthy apes" and "monkey brains". Because of his greed, he doesn't treat his own soldiers better, whom sometimes appear to be loyal to him regardless.

Both Donkey Kong 64 and Super Smash Bros. Melee imply that K. Rool is somewhat insane and demented. This instability might have been shown in Donkey Kong 64 when the Kongs made it to Hideout Helm. The level intro cutscene shows K. Rool panicking and starting the countdown to fire the untested Blast-O-Matic, despite warnings that the machine could backfire, thus killing the Kremlings and K. Rool himself as well. The final battle of Donkey Kong 64 also showed him to be somewhat of a showboater, constantly showing-off and making taunting gestures, usually whenever he lands a hit on one of the Kongs.

K. Rool's greatest weakness is his own incompetence. It is very common for him to be defeated simply because he keeps making the same mistake in a fight, such as in Donkey Kong Country, when he keeps throwing his crown, allowing Donkey and Diddy to jump on his head. However, he does gain more competence later in his canonical appearances, such as when he became powerful enough to destroy an island.

The reasons for stealing DK and Diddy's Banana Hoard and kidnapping DK are not fully understood or consistent. According to Gregg Mayles (designer of Donkey Kong Country and the Banjo-Kazooie series) on's former "scribes" column, K. Rool's motivation for stealing the Banana Hoard is that he wants Donkey Kong and Diddy Kong to starve to death so that he can occupy their treehouse, though why he wishes to do so is even less fully understood since a small treehouse is nothing in comparison to his numerous lairs and hideouts (although it could be an example of his deep insanity), or the true reason could be is that he wishes to occupy the treehouse as an example of his conquest over Donkey Kong (the current ruler of Donkey Kong Island) and he now considers himself its new ruler by residing in the treehouse. Since Donkey Kong Country 2: Diddy's Kong Quest he seems to be motivated to destroy all Kongs and their island as revenge for what they did to his island kingdom of Crocodile Isle.

Gregg Mayles also states that K. Rool simply just likes bananas, whilst this is backed up by the manual of the first game stating the Kremlings wanted the Bananas as food, this explanation is later contradicted in DK: Jungle Climber, where K. Rool claims he despises bananas. In Super Smash Bros. Ultimate, Viridi also believes that he and the rest of the Kremlings enjoy eating bananas just as much as the Kong family but given that Super Smash Bros. as a whole is non-canon, the legitimacy of this remains in question.

As of now, Nintendo themselves have not made any comment on the subject. But it is possible K. Rool originally liked Bananas, but came to hate them due to his numerous defeats to the Kong family.

Despite his cruel ways, King K. Kool does have some respect for the Kongs, saying their baseball skills are impressive, and he is also willing to team up or play with them.

Strangely, K. Rool appears to no longer speak using words in Super Smash Bros. Ultimate. Instead, he communicates through roars and animalistic grunts though he still retains most of his arrogant, boastful demeanor. Additionally, he now prominently uses his overweight shape and bulkiness as a weapon in battling as many of his attacks involve ramming his opponents with his stomach, which is aided by his body armor.



King K. Rool's most common form, the King form which is used on all of the games he appears in except for Donkey Kong Country 2: Diddy's Kong Quest, Donkey Kong Country 3: Dixie Kong's Double Trouble, Donkey Kong Land 2, Donkey Kong Land III where he takes on the forms, Kaptain and Mad Scientist. He has a red cape and a sharp crown in his King form.


King K. Rool's second form is as a pirate where he is referred to Kaptain K. Rool. Him, along with many of his minions, are dressed up like pirates. He appears as this form in Donkey Kong Country 2: Diddy's Kong Quest and Donkey Kong Land 2. In this form, King K. Rool has a brown cloak on, a black pirate hat, a cannon shooting cannonballs, and a belt with a skull in it. Kaptain K. Rool uses the cannon as a weapon in the game. His name is derived from the word captain which is replaced by a K, explaining that K. Rool is a Kremling.

Mad Scientist

King K. Rool's third form is a mad scientist and he is referred to Baron K. Roolenstein. He has black wig, a jetpack with helicopter blades, and a white lab coat. He also has black gloves on. He mainly uses his jetpack as a weapon. King K. Rool takes on this form in Donkey Kong Country 3: Dixie Kong's Double Trouble! and Donkey Kong Land III. This name comes from a famous monster, Frankenstein.


King K. Rool's most recent form is a boxer, naming himself King Krusha K. Rool, and acts as the final boss of Donkey Kong 64. However, this is the only instance where King K. Rool is introduced as himself in the beginning of the game, only to change into this form during the final boss.

Mario Super Sluggers

K. Rool's first appearance in a Super Mario game is in Mario Super Sluggers. He can only play as a team player, and is, ironically, on Donkey Kong's team, despite the fact that he hates DK and the Kongs. The explanation for this is that he was impressed with their skills, and said he's only going to team up when they're playing baseball. In Challenge Mode, he will try to stop Mario and the gang in Donkey Kong's stage by using his green, red, blue, and brown Kritters to challenge them. When the player wins, he will be unlocked, as well as all 4 Kritters. They join the heros to take down Bowser Jr. and save baseball island.

K. Rool is one of the most powerful batters in the entire game (tied with Bowser and Petey Piranha). Of course he's the strongest right-handed batter in the game; Bowser and Petey Piranha are left-handed batters. His pitching is also a bit above average. But K. Rool is at the bottom of the barrel when it comes to fielding (tied with the Purple Toad), and he is one of the slowest runners in the game (tied with the Red Magikoopa). He also has extremely poor stamina, but he does manage to make more good pitches than Petey Piranha, whose stamina is much worse.

K. Rool himself has great chemistry with all four Kritters and King Boo. But he happens to have bad chemistry with the Kongs (for obvious reasons), as well as Bowser (possibly because they consider themselves rival kings). He uses his scepter with a large gem to bat, and has a brand new pharaoh-like clothing style that only appears in this game.

Super Mario Odyssey

A minor reference to King K. Rool is made in Super Mario Odyssey, as a street in New Donk City is named "KROOL St."

Super Smash Bros. series

A trophy of King K. Rool can also be obtained in Super Smash Bros. Melee, in Super Smash Bros. Brawl, Super Smash Bros. for Wii U, and Super Smash Bros. for Nintendo 3DS.

In Super Smash Bros. Brawl, one of the names that appears when players press the "Random Name" button when naming their custom stage is KROOL. He also appears as a sticker, which grants a large throwing boost to all characters.

One of the downloadable costumes for the Mii Fighters in Super Smash Bros. for Wii U/Super Smash Bros. for Nintendo 3DS is based off King K. Rool.

Super Smash Bros. Ultimate

King K. Rool makes his debut as a playable fighter in Super Smash Bros. Ultimate, where most of his moveset is based on his attacks from previous Donkey Kong games (such as throwing his crown like in Donkey Kong Country, utilizing his blunderbuss and copter-pack from Donkey Kong Country 2 and Donkey Kong Country 3 respectively, throwing punches with his boxing glove from Donkey Kong 64, etc). For his final smash, he boards his mechanical island from Donkey Kong 64 and then uses the Blast-O-Matic to blast his opponents and destroy Donkey Kong Island in the process.

K. Rool also appears as three Spirits based on his forms through the series. His regular spirit is obtained by clearing his Classic Mode campaign. Kaptain K. Rool appears as a legendary class primary attack type, who's Spirit Battle is a Stamina Battle against K. Rool with increased power to his Blunderbuss and he has the ability to temporarily become invisible. Baron K. Roolenstein is an ace class primary shield type, exclusive to being summoned from the cores of Dr. Crygor, Kritter, and The Creature & Flea Man.


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  • His name may be an alternate form of the word “cruel.”
  • K. Rool's persona, Kaptain K. Rool, is referenced in only one other game beside Donkey Kong Country 2: Diddy Kong's Quest, albeit obscurely; in Donkey Kong 64, inside the sunken ship off to a corner, there is a book entitled "Kaptain K. Rool's Log Book".
  • Cranky Kong mentions in the Donkey Kong 64 instruction booklet that K. Rool had given up his silly disguises. While he has not seriously gone incognito since Baron K. Roolenstien, for the final fight he went by the moniker "King Krushaaaa K.Rool" as a boxer.
  • Strangely enough, King K. Rool was originally depicted with a tail. The last time he physically had it was in Donkey Kong 64 - inexplicably, it is completely missing in subsequent appearances. This may have something to do with the implied brutal injuries he suffered at the end of the game.
    • His tail is referred to in DK Jungle Climber where he says "But you lose for being a pain in my tail."
  • According to Gregg Mayles (designer of Donkey Kong Country and the Banjo-Kazooie series) on's former "scribes" column, K. Rool's motivation for stealing the banana hoard is either that he wants Donkey Kong to starve to death so that he can occupy his treehouse or simply just the fact that he likes bananas. The latter explanation is contradicted in DK: Jungle Climber though, as K. Rool states he despises bananas.
  • King K. Rool was also featured as the main villain of Nintendo's 2003 version of Camp Hyrule. King K. Rool caused chaos in Camp Hyrule by creating a massive earthquake.
  • Interestingly, King K. Rool's name is pronounced two different ways during the first episode of the Donkey Kong Country television series. First, he was referred to as "King Kay-Rool" and then "King Kuh-Rool" shortly afterwards. However, after that episode, the former pronunciation was never used again.
  • Tiki Tong seems to have a few similarities with King K. Rool; they both have an eye that's different from the other, and they both have reasons for stealing Donkey Kong's banana hoard.
  • In nearly all the games in the Donkey Kong Country series, King K. Rool has been the final boss. However, in Donkey Kong Country Returns, he makes absence whatsoever, thus making it the first game in the Donkey Kong Country series where he is not the final boss. This has surprisingly been the case in the three latest games.
  • King K. Rool also resembles King Koopa from The Adventures of Super Mario Bros. 3.
  • K. Rool's Baron K. Roolenstein persona is based on a combination of Frankenstein's Monster as portrayed by Boris Karloff in the Universal Horror movie Frankenstein and the character of Baron Victor von Frankenstein (played by Peter Cushing) from the Hammer Horror Frankenstein series. Additionally it may also be a play on Albert Einstein, who is a real life scientist.