King K. Rool
King K. Rool (キングクルール, King K. Rool) is the primary antagonist of the Donkey Kong series. The arch-nemesis of Donkey Kong and Diddy Kong, King K. Rool usually seeks to pillage the Kong Family's Banana Hoard in order to starve them to death and/or to satiate his own love for bananas.
After making cameos as a trophy in Super Smash Bros. Melee, Super Smash Bros. Brawl, and Super Smash Bros. 4, as well as a Mii Costume in SSB4, King K. Rool made his debut as a fighter in Super Smash Bros. Ultimate.
King K. Rool is the leader of the Kremling Krew, and King of the Kremlings. King K. Rool, like his spiritual predecessor Bowser, is a sinister, boisterous, burly reptile who antagonizes Donkey Kong, much like how Bowser antagonizes Mario. However, while Bowser has frequently wavered between friend and foe for the Mario Bros. and is respectful towards his minions, K. Rool is consistently presented as a threat to the Kong family's safety and way of life, and mistreats and berates his minions.
K. Rool is the main antagonist of most games in the Donkey Kong series and the archenemy of Donkey Kong and Diddy Kong, making his debut in Donkey Kong Country as the final boss. In that game, he steals Donkey Kong and Diddy Kong's banana hoard for unknown reasons, but two official reasons given are either that he likes bananas, or he stole them in order to starve Donkey Kong and Diddy Kong and occupy their treehouse. He made his return again in Donkey Kong Country 2: Diddy's Kong Quest as pirate captain "Kaptain K. Rool", where he kidnaps Donkey Kong and demands the Kongs' banana hoard for ransom, but Diddy Kong and Dixie Kong instead go to his home island, Crocodile Isle, to rescue him. Donkey Kong Country 3: Dixie Kong's Double Trouble! has him assume the alias of mad scientist "Baron K. Roolenstein", as well as kidnap both Donkey and Diddy to power his robot KAOS in a bid to control the Northern Kremisphere. However, Dixie and her younger cousin Kiddy Kong stop these plans and free Donkey and Diddy.
In Donkey Kong 64, he reappears in a new mechanical version of his old island, plotting to destroy DK Island with his Blast-O-Matic, but it gets damaged on arrival. He thus has Diddy, Lanky, Tiny, and Chunky captured, as well as Donkey and Diddy's banana hoard stolen again, to buy time to repair the weapon. Once the Kongs disable it, K. Rool flees, but crashes his airship on DK Island, where the final battle takes place: an extended boxing match where he goes by "King Krusha K. Rool" (with a typical champion boxer getup). He also appears in the Donkey Kong Land series, in similar roles to their SNES counterparts; he also appeared in DK: King of Swing and DK: Jungle Climber, as well as the spin-off racing game Donkey Kong Barrel Blast, which were developed by Paon. In the latter games, his design underwent some changes, the most notable of which were a smaller crown, a much shorter tail, and the removal of his golden breastplate in favor of a tan underbelly. He did not appear in either game of the revived Donkey Kong series, developed by Retro Studios (Donkey Kong Country Returns and Donkey Kong Country: Tropical Freeze), and neither do the Kremlings, being replaced by the Tiki Tak Tribe and the Snowmads, respectively.
King K. Rool appears as a trophy.
King K. Rool appears as both a trophy and a sticker.
The King K. Rool trophy is unlocked by clearing Target Smash level 4 with all characters.
As a costume
King K. Rool is the basis for a paid downloadable Mii Costume. Although the King K. Rool Hat can be worn by any type of Mii Fighter, only Mii Brawlers can wear the King K. Rool Outfit. The costume features aesthetics from K. Rool's Rare and Paon designs.
The King K. Rool trophy appears in both versions of the game.
Whereas Mario often squares off against Bowser, Donkey Kong must fight against King K. Rool. He's a big croc with a big attitude...and a tiny crown. He probably could have been Donkey Kong's most trustworthy animal friend. Think he'll ever have a change of heart? Not likely.
As a playable character
Main article: King K. Rool (SSBU)
King K. Rool appears as a newcomer in Super Smash Bros. Ultimate, and was formally announced alongside Simon, Richter, Chrom and Dark Samus during the Super Smash Bros. Direct on August 8th, 2018. According to Super Smash Bros. series creator Masahiro Sakurai, he used the Super Smash Bros. Fighter Ballot as a list of candidates to potentially include in a playable capacity for Ultimate. Due to King K. Rool having "received a ton of votes" on the Fighter Ballot, he was chosen to become a playable character in Ultimate.
King K. Rool has a composite design: his bestial voice, pronounced scales and golden breastplate are from his Rare design, while his clawed fingers, shorter tail, smaller crown and slightly modified cape are from his Paon design. However, Sakurai also admitted that K. Rool's overall size was slightly shrunken compared to his usual depictions, which is humorously referenced at the end of his reveal trailer.
A number of King K. Rool's moves are derived from his various appearances, with most of his special moves being the clearest examples. In addition to the Blast-o-Matic being his Final Smash, K. Rool's side special move involves him throwing his crown like a boomerang as in Donkey Kong Country. His "Kaptain" and "Baron K. Roolenstein" personas are also directly referenced: the blunderbuss from Donkey Kong Country 2: Diddy's Kong Quest and the Propellerpack from Donkey Kong Country 3: Dixie Kong's Double Trouble! are his neutral and up special moves, respectively.
Aside from these references, K. Rool's breastplate also functions as more than just an aesthetic throwback: it grants passive protection during certain moves and can function as both a counterattack and reflector via his Gut Check down special move. However, the breastplate has a set amount of durability that slowly regenerates over time and will stun K. Rool once it is fully depleted.
As a costume
The King K. Rool costume for Mii Fighters reappears, albeit as unlockable content instead of downloadable content.