Reaction Commands are abilities activated at certain times. There are dozens to perform, and only a few are listed. (Please add more.)

Listed reactions

Reversal

Sora (or Roxas) quickly slides around an enemy, confusing and paralyzing all Dusks in the immediate area for a short time.

Used against: Twilight Thorn's lightning, Xemnas's lightning, and Dusks

Show Stealer

Sora jumps behind Demyx's back and hold his Keyblade in a guitar fashion. A light tune is then heard and Sora smacks Demys into the air.

Rob Scthye

Sora evades Marluxia's slash and pulls up his scthye with the Keyblade, after gaining control, Sora throws the scthye towards Marluxia, damaging him and earning back his count down numerals.

Learn

Sora snatches an attack from either Xaldin or a Dragoon, leaps into the air, thrashes downward, Keyblade first, and lands on the enemy. The charging phase (Stealing the attack) can be done up to nine times if the normal attack is not used. Magic can still be used freely.

Used against: Xaldin or Dragoon Nobody.

Wild Dance

Sora grabs a Water Form and swings it around his head, attacking the other water forms in the area.

Used against: Demyx's Water Forms

Warp Snipe

Sora jumps in front of a crossbow bolt and deflects it.

Used against: Xigbar or Sniper Nobody

Fail-Safe

Sora grabs an Assassin that is about to self-destruct, and throws it towards the ground, dealing damage to nearby enemies and forcing other Assassins to emerge from the ground.

Used against: Assassin Nobodies

Berserk

Sora grabs his opponent's weapon and floats around, picking up additional non-boss enemies.

Used against: Saix or Berserker Nobody.

Eclipse

Sora, holding a Berserker or Saix's claymore, flips backwards and hits the enemy. The combo can be continued for two more attacks. Each attack deals half the normal attack damage.

Used against: Saix or Berserker Nobody, when holding their claymore.

Magna Storm

Sora, after three successive Eclipse attacks, throws all his strength at the enemy, dealing triple damage with each strike.

Used against: Saix or Berserker Nobody.

Overtaker

Roxas leaps at Axel, repeatedly attacking him with both keyblades.

Used against: Axel (in the basement of the Simulated Twilight Town)

Clear Light

Roxas throws Axel to the ground, forcing him to turn the lava-flooded floor back to normal.

Used against: Axel (in the basement of the Simulated Twilight Town)

Burst Edge

Roxas throws both his keyblades at Axel, forcing him out of the wall of flame.

Used against: Axel (in the basement of the Simulated Twilight Town)

Key Counter

When the Twilight Thorn tries to punch him, Roxas jumps over the Twilight Thorn's hand, and slashes its face.

Used against: Twilight Thorn

Lunarsault

After being thrown into the air by the Twilight Thorn, Roxas slashes it in the head while coming down.

Used against: Twilight Thorn

Break Raid

After being tipping Roxas off the pilar, the Twilight Thorn creates a giant orb. Roxas throws the Keyblade into the orb, causing it to explode.

Used against: Twilight Thorn

Face Off

Sora forcefully breaks the curse Xemnas laid on him, then rushes upwards the tower while Xemnas jumps down as well.

Counter

While come in close contact with Xemnas, Sora blocks and counter Xemna's attack.(in Final Mix+, by successfully pulling this reaction command will leave Xemnas to 1HP.)

Slicer

When facing a rising block from the skyscrapers, Sora does a slight jump back while twirling and charging his Keyblade. He then lunges and executed and few flashing slash, slicing the block apart while standing in the other end.

Skyscraper

Sora slices the blocks from skyscrapers while jumping from the sliced blocks to approach the Castle.

Stunt Dodge

Sora makes a high leap and jumps to the other side of the canon. An escaping Reaction Command

Riding Shot

Sora locks on one of the skysraper blocks and bats it towards the Nobody Dragon.

Meteor Rain

Riku uses the force and executes a 360 slash that breaks the skyscraper block, launching the debris towards the Nobody Dragon, breaking it's wing shield.

Break Free

Riku leaps and dispatch Xemna's grip on Sora, forcefuly negates Xemna's force attraction with his own strength.

Block

Riku spins his keyblade and blocks the rapid Aerial Blades fired by Xemnas, Block also replaces Sora's attack command, since it is crucial to press the buttons(both reaction command and attack buttons) in order to fully negate all Xemna's attack.

Rising Sun

After Sora attacks an Armored Knight, he dives down to punch the enemy up to 5 times.

Used against: Armored Knight (after attacking it)

Firagun and Blizzagun

Sora either stabs his keyblade into the Volcanic Lord or grabs the nose of the Blizzard Lord, and throws him into the remaining one

Used against: Blizzard and Volcanic Lords

Snag

Sora jumps up and grabs a Surveillance Robot from behind.

Sparkle Ray

Sora spins in a circle as the Surveillance Robot fires its laser, effectively destroying or severly injuring all surrounding enemies.

Bat Cry

Sora latches the Keyblade onto one Hook Bat's hook. Sora then spins through midair, hitting airborne enemies with the captured Hook Bat.

Flash Block

Sora blocks all Spehiroth's rapid sword slices in one go (*only applies in one of Sephiroth's combo.)

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