Kirby initiates Ultra Sword by simultaneously donning the green cap associated with the ability and summoning the namesake weapon, with opponents taking 3% damage if they are too close to Kirby. He will perform a single inward slash, dealing 5% damage to opponents. Any opponent caught in the slash will be forced off the ground and in front of Kirby, as well as being compressed. Kirby will then perform eight slashes while moving around the opponents, each dealing 2% damage. Kirby ends the Final Smash by greatly expanding the size of the Ultra Sword before performing an overhead slash, dealing 16% and launching opponents with high diagonal knockback.
Ultra Sword, with all hits connecting, deals 40% damage and high diagonal knockback, making it ideal for KOs near the edge. However, on larger stages, Ultra Sword may not be as effective, and stage terrain can block opponents from passing the blast line.
For Kirby's Final Smash, he swings a sword that's waaay bigger than he is. If the first swing hits, he'll keep going with a combo of lightning-fast slices, dealing tons of damage. For the last swing, the sword grows even larger and launches any victims. Make sure that first swing hits, though, or nothing else will happen!
Ultra Sword originates from Kirby's Return to Dream Land, which is a Super Ability he instantly acquires from inhaling a Super Blade Knight. Its primary job is to destroy large groups of enemies and rip apart the terrain to reveal items and secret pathways. Each time Kirby uses Ultra Sword, the swung weapon is randomly selected from a variety of different objects, such as a bluefin tuna or Galaxia.
- Though Kirby uses different objects when he attacks with this ability in Kirby's Return to Dream Land, he can only use the actual Ultra Sword.
- In Kirby's Return to Dream Land, Kirby's Ultra Sword will only slash the screen once per use. He only uses the combo as seen in his Final Smash as a finishing blow on bosses requiring a Super Ability.
- If Kirby uses Ultra Sword while a Monado Art is active, the effects of the selected Art will still affect the Final Smash.
|Kirby's Special Moves|
|Side Special||—||Hammer||Hammer Flip|
|Up Special||Final Cutter|
|Final Smash||—||Cook Kirby||Ultra Sword|