The Darkness is commonly referred to as "The Heartless". Creatures and beings of evil that have lost their hearts. Their known main motive is to conquer the entire universe, engulf it in everlasting darkness. The Heartless can appear in countless forms, some are representative of emotions, like anger, hate, sadness and anguish. But no matter how big or small they are, they are a threat to all life, and must be stopped.

Opposites are the result of a Keyblade Wielder that has succumbed to Darkness, and evolved into what the Masters call, "The Opposites", mirror versions of the wielders. For example, if a nice and empathetic character evolved into an Opposite, the opposite would be cruel, calculative, and all out evil. Beware, though they are just opposites, they too also have the power to wield a Keyblade.

They're identified by this symbol/mark
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