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Zant is one of the two major antagonists in Twilight Princess. He calls himself the King of Twilight. He is a member of Twili who usurps the throne of the Twilight Realm from Midna before the events of Twilight Princess.
Zant's Hand is an enemy only found in Twilight Princess. It only appears in the Palace of Twilight. This menacing enemy doesn't cause any damage, but it is a huge nuisance, in that as soon Link picks up a Sol sphere, it will pursue him relentlessly and try to take it back and return it to the altar from which it was taken.
Phantom Zant is the mini-boss of the Palace of Twilight. He is encountered twice, and is also seen early in the dungeon.
Zant's Mask is an enemy that only appears in the Palace of Twilight in Twilight Princess. They are enlarged versions of Zant's stylized helmet, but when the mouthpiece opens, they fire balls of magic at Link. These blasts can be deflected using Link's shield