Second heaviest character in the game, only behind Bowser, giving him high survivability.
High launch power on many attacks.
Down aerial and back aerial can meteor smash.
Down tilt and down throw can bury opponents in the ground, leaving them open to attack.
Has two long range projectiles.
Has the best recovery of any Super Heavyweight and Heavyweight character, being able to recover from the edge of the stage all the way to the edge of a platform without any problems. His recovery can also send opponents upwards if the make direct contact with it, giving K. Rool the opportunity to gain an advantage.
Tanking enemy attacks with Belly Super Armor too often can break K. Rool's armor. K. Rool's armor health is indicated by cracks on K. Rool's belly. Over time, these cracks will repair themselves, as long as attacks that have Belly Super Armor are not being used. If K. Rool's belly takes too much damage, it will stun him similarly to a shield break.
Some of his moves have significant start-up or end lag.
Belly Super Armor does not resist grabs.
Belly Super Armor only protects the belly portion of King K. Rool.
Projectiles are relatively slow, making them ineffective at long ranges.
Large hurtbox makes him easy to hit, susceptible to combos and juggling.
Has slow mobility on the ground and in the air.
Despite an impressive recovery, the propeller blades offer no side protection and disjointed attacks can bypass them.
King K. Rool is a Super Heavyweight character, with strong super armour on a lot of his moves. His side blunderbuss and crownmerang are projectile based, and has a very style-focused playstyle, with his meteor-smashing back air and down air, and his "K. Roolicide" where the crocodile king sucks his opponent into his neutral special and launch them out to the blast zone (even though K. Rool can possibly still recover from it).
Certain belly-based moves in King K. Rool's moveset grant super armor. However, taking damage with these moves cracks his stomach armor, with K. Rool getting dazed upon it breaking completely after 36.02% worth of damage. The Belly Super Armor regenerates when not using attacks which activate it.
K. Rool has a tall hurtbox when standing or walking, but dashes on all four limbs akin to real crocodiles, significantly lowering his hurtbox.
Neutral Attack: A palm strike, then a claw swipe and then a kick.
Forward Tilt: Performs a forceful clap. Can be angled and has Belly Super Armor.
Up Tilt: An uppercut. Deals less damage and knockback later into the attack. The sweetspot launches opponents diagonally while the sourspot weakly launches opponents vertically.
Down Tilt: A slow sumo stomp. Is extremely strong on aerial opponents and can bury grounded opponents when sweetspotted. Also produces an earthquake hitbox around his foot.
Dash Attack: A belly-first lunge with Belly Super Armor. Deals 14% damage. Surprisingly fast and strong, but has much less power later into the attack.
Forward Smash: Equips a boxing glove from Donkey Kong 64 and throws a straight punch. Can be angled. Deals 20% uncharged. Has a sweetspot on the boxing glove and a sourspot on K. Rool's arm.
Up Smash: Headbutts upward, then falls to the ground in a plank. Has Belly Super Armor. Deals 12% uncharged. The headbutt has a narrow hitbox and the plank portion can very weakly meteor smash opponents.
Down Smash: A leaping belly flop. Has Belly Super Armor. Deals 29% uncharged. One of the strongest down smashes in the game and lifts K. Rool's hurtbox a considerable distance, allowing him to potentially avoid low attacks or grabs.
Floor Attack (Front): Swipes in front of himself with one claw while kicking behind himself with one foot.
Floor Attack (Back): Sweeps his claw behind and then in front of himself.
Floor Attack (Trip): Swipes on both sides of himself with his claws.
Ledge Attack: Quickly swipes forward with one claw. Has incredibly high range.
Neutral aerial: Expands his belly to perform a splash. Has Belly Super Armor. Deals 12% damage. Has poor range behind him.
Forward aerial: A dropkick with a large amount of knock back. Deals 14% damage. Is considered one of K. Rool's best moves.
Back aerial: A slow overhead punch behind him, similar to Ganondorf's forward air. A sweetspot is on K. Rool's fist while his arm is a sourspot. Can meteor smash aerial opponents if sweetspotted. Launches grounded opponents diagonally. Deals 19% damage.
Up aerial: A quick headbutt upwards. Also causes K. Rool to float slightly. Has Belly Super Armor. Deals 13% damage. Incredibly strong but extremely laggy.
Down aerial: Performs a frontflip before stomping downward with both feet. Has Belly Super Armor. Can meteor smash opponents if the early hitbox connects, but the later hitbox launches opponents horizontally. Deals 13% damage.
Grabs and Throws
Grab: Reaches out with high range. If K. Rool misses, his left eye comically bulges in frustration.
Pummel: Headbutts the enemy.
Forward Throw: Lifts the opponent over his head and slams them on the ground. Deals 10% damage. Can also hit nearby enemies.
Back Throw: K. Rool drags his opponent across the ground and hurls them backwards. Deals 11% damage. Has high horizontal knockback and is his main KO throw.
Up Throw: K. Rool heaves the opponent on his back and jumps up high before coming back down, launching the enemy with vertical knockback. Deals 16% damage. This is the strongest up throw damage-wise but has very weak KO potential. Landing on a platform can alleviate this.
Down Throw: Picks up the opponent and slams head-first them into the ground. Deals 5% damage. Buries the opponent, giving this throw much versatility.
Outside of minor cameos such as trophies, Ultimate marks King K. Rool's first physical appearance in a decade, as he last appeared in 2008's Mario Super Sluggers.
King K. Rool is the third playable Smash Bros. character to have been created outside Japan, following Diddy Kong, also created as part of the Donkey Kong Country series by the British developer Rare, and Dark Samus, who was created by the Texas-based Retro Studios.
According to Masahiro Sakurai, King K. Rool's inclusion in Ultimate was a result of his popularity in the Super Smash Bros. Fighter Ballot.
This is reflected in K. Rool's trailer; where King Dedede (voiced by Masahiro Sakurai) trolls DK and Diddy (and the audience) with a fake reveal; only to be ambushed by the real K. Rool.
In King K. Rool's trailer, King Dedede disguising himself as King K. Rool is similar to the Donkey Kong Country episode "Just Kidding", in which Diddy Kong and Candy Kong make Donkey Kong use a King K. Rool costume to pull a prank on Cranky on All Fool's Day, but backfire when they accidentally bring the real King K. Rool to Cranky's house and the Crystal Coconut.
King K. Rool is the second fighter in the series whose back-aerial meteor-smashes the opponent, with the first being Lucas.
King K. Rool is the only character who has a taunt that uses super armor.
King K. Rool is the heaviest newcomer to Smash Ultimate.