Green Requiem

Green Requiem (グリーンレクイエム) are enemies from Kingdom Hearts and Kingdom Hearts: Chain of Memories.

Green Requiem are members of a strange family of artificial Heartless. Almost every Heartless in the family (with the exception of Wizards and Bookmasters) shares a common trait: They look very much like Black Mages (from the Final Fantasy series), and all have names referring to their color and a form of music. A requiem is a piece of music composed to honor a dead person. The name fits the Green Requiem nicely.

Green Requiem utilize Cure magic, and are resistant to all other forms of magic. They tend to fly really high, just out of Sora's reach. Like their relatives, Green Requiem are most common in Wonderland, or at least once the Hollow Bastion keyhole is revealed. A common place you can find them, after you seal the Hollow Bastion keyhole, is at the high tower, on the other side of the giant steps. A few of them will be surrounding a defender, and you can kill those, leave the world, come back to the same spot and kill them again.

In Kingdom Hearts, Green Requiems have 15 HP,their Attack Power is 15, and their Defense Power is 12. Sora also recovers 14 MP for hitting one, and gets 4 experience points for defeating it. However, after the events at Hollow Bastion, the HP becomes 45, the Attack Power becomes 35, and the Defense Power becomes 27.

Kingdom Hearts
''Spellcasting Heartless. They heal themselves and other Heartless with Cure. They are slow-moving, but hover high in the air and absorb most magic attacks.''

Kingdom Hearts: Chain of Memories
''A magic-wielding Heartless that drifts through the air. It doesn't attack, but it can cast Cure to heal other Heartless.''

The Green Requiem is slow, but its immunity to magic attacks makes it tough to squash.

Strategy
A good way to defeat Green Requiem, is to have High Jump and Aerial Sweep, then jump and attack. It is also important to note that they absorb all magic spells. For Chain of Memories and Re:Chain of Memories, do not equip attack cards with passive elements (like Lionheart, Photon Debugger etc.) as using these cards to attack a Green Requiem will heal it.

Trivia

 * Though their attacks are not related, Emerald Blues look a lot like Green Requiem.
 * The role of the Green Requiem in Kingdom Hearts is taken over by the Crescendo in Kingdom Hearts II