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Maleficent's Raven is a minor antagonist in Kingdom Hearts II, Kingdom Hearts Birth by Sleep, and Kingdom Hearts 3D: Dream Drop Distance who originally resided in the Enchanted Dominion. It first appeared along with its mistress, Maleficent, in Disney's Sleeping Beauty.
Kingdom Hearts Birth by Sleep
When Prince Phillip and Aqua are trying to escape the Forbidden Mountain so they can reach King Stefan's castle to awake Aurora from the spell, Maleficent's Raven is the first to notice them escaping and quickly summons the goons to attack them.
Kingdom Hearts II
While Flora, Fauna, and Merryweather are giving Sora his new outfit, Maleficent's Raven is watching them from high up above the tower's window, remaining unnoticed, and quickly flies off. Sometime later, it brings Maleficent's empty robe to Yen Sid's tower, and the memories of Flora, Fauna, and Merryweather accidentally bring her back to life. Later on, Pete travels to Hollow Bastion to see if the rumors of Maleficent being eliminated are true. Just then, the raven and the revived Maleficent arrive.
Kingdom Hearts 3D: Dream Drop Distance
Maleficent's Raven first appeared as a minor character going by the name of Diablo (the Spanish word for "devil") in Sleeping Beauty. Throughout the movie, Diablo essentially serves as Maleficent's eyes and ears, finding Aurora in the forest and keeping Prince Phillip from escaping the Forbidden Mountain. Diablo sticks to Maleficent's side as a loyal pet and remains perched on her shoulder when not doing her bidding. In the film's climax, the raven alerts Maleficent's goons of Prince Phillip's escape from the dungeon with help from the three good fairies, and when the protagonists are able to get past the castle boundaries, Diablo attempts to alert the sleeping Maleficent. Merryweather spots the raven and gives chase, eventually turning the bird to stone. This is a short-lived victory, however, as Diablo was able to succeed in awakening Maleficent, setting the scene for the evil fairy's final confrontation with Prince Phillip.