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Anti-Saïx KHD.png

Katakana アンチサイクス Nobody.png
Rōmaji Anchi Saikusu
Japanese Anti-Saix

Type Organization XIII
Game Kingdom Hearts 358/2 Days
Saïx's Replica Data
Hearts Munny Stun
91 1316 1480 125
Fire Blizzard Thunder Aero
x0.63 x0.66 x0.24 x0.70
Ignite Freeze Jolt Air-Toss
x0 x0 x0 x0

Missions 73-93

The World That Never Was

Anti-Saïx is a dark version of Saïx that appears in Kingdom Hearts 358/2 Days. It serves as a boss in the Mission Mode version of Mission 91: Escape the castle, replacing the true Saïx in The World That Never Was at Nothing's Call. As Anti-Saïx only exists in Mission Mode, it does not exist in Kingdom Hearts canon.


Anti-Saïx is, as its name suggests, a doppelgänger of Saïx. Its entire body is black, and it carries a dark copy of the Lunatic Claymore. It has circular eyes that glow yellow, a trait common amongst Heartless. It is unclear if this being possesses Saïx's scar.

Anti-Saïx's name reflects that it is dark copy of Saïx. The prefix "anti-" means "against."


Technique Attribute Effects Power Guard?
Berserk (バーサク Bāsaku?)
Moon Silence (100%) 0.30
Releases light around him and enters Berserk state.
Berserk Charge (バーサク突撃 Bāsaku Totsugeki?)
Physical 0.21
Performs a continuous attack while stepping forward.
Berserk Dance (バーサク乱舞 Bāsaku Ranbu?)
Weapon attack Physical 0.19

Shock wave Moon Silence (10%) [note 1] X
Performs a continuous attack that emits a shock wave moving along the ground, and throws his weapon.
Berserk Leap Attack (バーサク大ジャンプ攻撃 Bāsaku Dai Jampu Kōgeki?)
Moon Silence (35%) 1.65 X
Moves to high ground, and jumps down, emitting a shock wave.
Warp Attack (ワープ攻撃 Wāpu Kōgeki?)
Physical 1.17
Warps into the air, and attacks while falling down.
Continuous Attack (連続攻撃 Renzoku Kōgeki?)
Physical 0.13
Swings weapon up, then swings twice while stepping forward.
Shock Wave (衝撃波 Shōgekiha?)
Moon Silence (10%) 1.43 X
Raises weapon and emits a shock wave that moves along the ground.
  1. ^ The shock wave that moves along the ground has a power of 1.43, while the shock wave that comes from the thrown weapon has a power of 1.30.

Anti-Saïx uses the same tactics as the true Saïx while in battle, though it drops less frequently from its Berserk state, making it much more difficult to defeat. It will immediately power up and go berserk at the start of battle. The boss will continue to hammer the playable character with its dark version of the Lunatic, so it is important to heal regularly and also make use of the Limit Break. Quickly attack the moment Anti-Saïx has settled down, or it will counter the moment an opportunity presents itself.


Anti-Saïx - Kingdom Hearts 358/2 Days