Anti-Saïx

Anti-Saïx is a dark version of Saïx that appeared in Kingdom Hearts 358/2 Days. Fought in the World That Never Was and taking the place of the regular Saïx in the latter's boss battle, it is very similar to Anti-Sora. It could use the same abilities as Saïx, but to a lesser extent. Anti-Saïx wields a dark version of the Lunatic, becoming berserk in a means of gaining power. This enemy also has the same amount of health as its Nobody counterpart. Anti-Saïx can only be fought when playing during mission mode.

Trivia

 * Anti-Saïx can be played as in 358/2 Days through glitches utilized in the game. All icons appear as Roxas on the screen.  Anti-Saïx also shares Roxas' voice during gameplay. It slides along the floor, animated rather poorly due to these hacks.
 * The reason behind Anti-Saïx's creation remains shrouded in mystery.
 * Anti-Saïx doesn't have a voice, as do all other Anti-characters.