Ultimate Armor X

Ultimate Armor X, also known as X, is a version of X equipped with the Ultimate Armor that appeared as a boss in Mega Man X5 and in the X Challenge from Mega Man X Legacy Collection and Mega Man X Legacy Collection 2.

Mega Man X5
When playing as Zero, X will appear as the boss of Zero Space 3.

Attacks:
 * Charge Shot
 * Charge Double Cyclone
 * Charge Frost Tower
 * Soul Body

X Challenge
Ultimate Armor X appears alongside Awakened Zero in the last battle. X will primarily dash and jump around, periodically stopping to fire charge shots.

After losing half of his energy, X will start changing between the Fourth Armor, Falcon Armor, and Shadow Armor. His movements remain the same, but his attacks change depending of the armor. With the Fourth Armor, he continues using charge shots, and sometimes uses a charged Ground Fire. With the Falcon Armor, X will use the Spear Charge Shot and sometimes its Free Move function. With the Shadow Armor, X will try to get close to use Enzukirin.

If Awakened Zero is defeated first, X will return to the Ultimate Armor, and he will use Yammar Option to improve his offense and defense. Besides his previous moves, Ultimate Armor X will also use the charged versions of Ray Arrow and Guard Shell.