Player (KHχ)

Player is the playable protagonist of Kingdom Hearts χ and Kingdom Hearts Union χ. A Keyblade wielder from Daybreak Town, they are chosen to join a faction prior to the Keyblade War to compete for Lux.

Following Player’s imprisonment within the data Daybreak Town, they chose to join their heart with a newborn named Xehanort.

Kingdom Hearts χ[chi]
Player is chosen by the Keyblade and joins one of the five Unions. After joining one, they meet their Chirithy, who acts as their companion throughout their adventures. Player goes on missions throughout various worlds to defeat Heartless and collect Lux.

Chirithy tells Player about the Foretellers, the Book of Prophecies, and the impending Keyblade War, explaining that the Foretellers hope to harness the power of the future to prevent the war from taking place.

Some time later, Player is approached by Moogle and loaned a Light Draw Bangle in order to obtain Crystals of Light from Raid Bosses, unaware of the Moogle's reluctant exchange with the Nightmare Chirithy. Later, Nightmare Chirithy, posing as Player's real Chirithy, gives them the Power Bangle.

One night, Chirithy secretly shows Player a dream in which the Master of Masters speaks to the Foretellers within the Clock Tower. However, Nightmare Chirithy interferes with the dream, waking them up.

The next day, Player meets Ephemer, a Keyblade wielder from a different union. He explains to Player that the worlds the wielders visit on missions are holograms, or "projections", and that he is investigating how the projections are created as well as why the Unions are collecting Lux. When Player describes their dream of the Clock Tower, the pair decide to go there to investigate.

Together, Ephemer and Player find an entrance into the Clock Tower, but turn back before entering and promise to meet again the next day. At night, Player excitedly tells Chirithy about their new friend and their meeting tomorrow, but on the next day, they are left waiting alone at the Fountain for Ephemer, who never arrives.

Unbeknownst to Player, Strelitzia observes them waiting for Ephemer throughout the day and sympathizes with their plight.

One night, Ephemer appears to Player in a dream and tells them to find him before disappearing at the entrance of the Clock Tower. Player searches for Ephemer at the Tower, where they encounter Ava, who decides to test their strength in battle. Player loses, and Ava tells them that she senses their potential, but also their sadness. While they sleep that night, Ava appears in their room, speaking with Chirithy about the dream Ephemer sent to Player.

Player continues carrying out their daily missions. One day, they are approached by Skuld, a Keyblade wielder and a friend of Ephemer's. Skuld tells Player that she had a dream in which Ephemer told her to find and help Player. While talking, Skuld and Player witness Aced and Invi fighting on the rooftops; the two then decide to go looking for Ephemer.

On the way to the Clock Tower, Player and Skuld are ambushed by a group of Darklings, a type of Heartless they have never seen before. After defeating the Darklings, Nightmare Chirithy briefly appears and reveals that the Darklings used to be Keyblade Wielders themselves.

Player, Chirithy, and Skuld make their way to the Foretellers' Chambers, where they are confronted by one of the Foretellers. The Foreteller reprimands the group for trespassing, then claims that Ephemer was acting under ulterior motives and imply that he died by their hand.

Enraged, Player confronts the Foreteller, but is defeated. Afterwards, the Foreteller compliments their strength and reveals themself to be Ava in disguise. She tells Player and Skuld about the Dandelions, a group of Keyblade wielders she is training to escape the Keyblade War and continue the fight against darkness. She also reveals that Ephemer has already joined the Dandelions, and invites Player and Skuld to join as well. Skuld agrees, but Player hesitates, reluctant to leave behind those who will fight in the Keyblade War.

One day, Player witnesses two Keyblade wielders arguing in Fountain Square. Player and Skuld both attempt to intervene in the conflict, but more wielders appear to join in the argument. Aced arrives and states that each wielder can only trust their own Union. Player steps up to Aced, who challenges them to a fight. Aced defeats player and Ira appears to confront him. After an argument, Aced leaves, and Ira warns Player and Skuld that the Keyblade War is inevitable.

After collapsing, Player dreams of the impending Keyblade War. They wake to find Skuld and Chirithy beside them; Skuld tells Player that Ava has gone missing, and the pair decide to seek out Gula, as Chirithy believes he may know what happened to her. Gula tells them that anything they do to stop the War is pointless, as the only person capable of doing so is the Master of Masters. Gula and Ava had searched for him to no avail, but Ava decided to find the Master’s sixth apprentice, Luxu, to ask for his whereabouts. Gula tells them the secret passage written in the Lost Page of the Book of Prophecies, and how the traitor will be the one who will set the War in motion with a single strike, sounding the Clock Tower’s Bells. As they speak, the bells from the Clock Tower sound, commencing the beginning of the end.

Player and Skuld part ways, with Skuld asking Player not to participate in the War. Player decides not to fight; however, Nightmare Chirithy appears to taunt their decision, and reveals that the Power Bangle in Player's possession has been drawing on the power of darkness. When Chirithy asks which wielder Nightmare Chirithy belongs to, it claims to belong to Player. It summons Darklings to fight, and once they’re defeated, it absorbs the Darklings and becomes a Nightmare monster. With its defeat, Nightmare Chirithy disappears “for now,” and announces it’ll see Player “in another dream.”

Player joins in the battle against the other unions at the Badlands. Player encounters and fights against four of the five Foretellers, all except their Union leader, one by one. With each battle, Player grows weaker, and they see other wielders fall, Keyblades land on the ground, and the hearts of others float into the sky. Eventually, Player collapses on the ground in pain, finding themself to be the last survivor on the battlefield. Chirithy appears before them, embracing and telling them to rest. The light of Kingdom Hearts appears in the sky; then, Skuld appears before Player, followed by Ephemer. Player berates him for breaking his promise, which he apologizes for. Then Ephemer reaches out his hand and Player takes it, joining them in the next world.

Personality
Ephemer notes that Player doesn't talk much and may be shy. They care deeply for their friends; when they believe one of the Foretellers killed Ephemer, they are willing to stake their own life to avenge him, and when Daybreak Town collapses, they sacrifice themself so that Ephemer and Skuld can survive.

Customizing the Player
In a similar fashion to Kingdom Hearts Mobile and Kingdom Hearts Re:coded's Avatar Menu, Player is a customizable avatar. Except for gender, every aspect of Player's appearance can be changed at any time during the game, and in Kingdom Hearts Union χ, the gender can be changed as well.