Dark Aura

Dark Aura (ダークオーラ) is an ability which appears in Kingdom Hearts, Kingdom Hearts: Chain of Memories, Kingdom Hearts II and Kingdom Hearts Re:coded.

Mechanics
In Kingdom Hearts: Chain of Memories, Dark Aura is an Attack Sleight. It consists of Riku rapidly opening portals of darkness and rushing out of them at the opponent with his blade, then slamming the ground to summon columns of light that confuse the enemy.

In Kingdom Hearts II, Dark Aura is an Action Ability that requires 2 AP to equip and 10 MP to use. . It consists of Riku firing orbs of dark fire (similar to Dark Firaga) which stop the enemy's movement.Unlike most Action Abilities, the second Dark Aura is used through a Reaction Command at the end of Sora's combos, or, directly by the player in the final battle with Xemnas in Kingdom Hearts II, when the player is forced to control Riku for a time. It appears as an attack on Riku's unique command menu, utilized by pressing.

Kingdom Hearts: Chain of Memories

 * Riku learns Dark Aura by obtaining Dark Mode.

Kingdom Hearts II

 * Riku has Dark Aura as a default ability.

Kingdom Hearts
While possessed by Ansem, Seeker of Darkness, Riku uses the first form of Dark Aura as his strongest technique.

Kingdom Hearts 358/2 Days
During his final battle with Roxas at The World That Never Was, Riku uses the first form of Dark Aura, but he does not have to enter Dark Mode.

Kingdom Hearts: Chain of Memories
As a Replica created from the real Riku's combat data, the Riku Replica can utilize Dark Aura along with Riku's other skills granted by Dark Mode. Unlike Riku, who needs a card value of 27 to perform this attack, the Riku Replica can use it with any value. However, he does not start to use this attack until the final battles with Sora in the main story and Riku in Reverse/Rebirth.

Kingdom Hearts Re:coded
During the third and final battle with Data-Riku in Hollow Bastion, he can utilize the first version of Dark Aura at random times.