Unknown Construct α

'''Note: This article is about the boss enemy. For the playable Alpha, see Lucia: Crimson Abyss.'''

''A Construct of unknown origin, wielding a katana just like Lucia, but far more experienced and skilled at it. Every swing seems to tear apart the fabric of reality.''

The Unknown Construct α, otherwise known as α or Alpha, is a boss enemy introduced in Chapter 0.

Note: The following skill list includes all skills denoted in Alpha's Phantom Pain Cage arsenal. However, this list does not necessarily encompass all of her attacks. See Combat Behavior for more information.
 * Scorched Earth: Bends the battlefield to her will, causing enemies on the battlefield to continuously take extra damage.
 * Wave Blast: Unleashes multiple air-bending sword waves at the enemy.
 * Sword Wave: Unleashes an air-bending sword wave at the enemy.
 * Dodge: Dodge attacks from enemies.
 * Zigzag: Zigzags to close distance with an enemy.
 * Block: Holds up weapon to block some damage from attacks.
 * Cross Slash: Unleashes a quick cross slash at enemies.

Combat against Alpha is generally unchanging. Throughout any encounter with this enemy, she will frequently use her Dodge skill to break out of stun-lock. In doing so, she will temporarily disappear from the battlefield, re-emerging elsewhere shortly thereafter. When re-emerging, she will often utilize either her Cross Slash attack or an unlisted skill, Rend, which will lock the player in place momentarily before dealing heavy damage. At higher difficulties, she will begin using Wave Blast after re-emerging as well. When she is successful in using Wave Blast or otherwise is at a comfortable distance from her target, she will often backstep and then instantly launch a single Sword Wave. She will utilize her Zigzag skill to approach her target when she is not using these skills. As Alpha's HP depletes, when the player character initiates an attack, she will become increasingly more likely to utilize her Block skill. After successfully blocking a few hits, she will often break the animation using either her Cross Slash or Rend attacks.

Upon the release of Fallen Star, this enemy lost access to some of her more powerful attacks in an effort to decrease difficulty of her Phantom Pain Cage encounter.