Yuga

Yuga is a character in. He is one of the game's main antagonists, alongside Ganon, with whom he merges late in the game.

Biography
Yuga is a sorcerer who has the power to become a wall drawing. With his magic wand, he can trap people within picture frames, turning them into paintings. He serves one whom he calls "Her Grace."

Yuga is first seen at the Sanctuary. He transforms sister Seres into a painting and kidnaps her, as Link can only watch helplessly. When the young hero tries to attack, Yuga swiftly turns into a drawing himself and hides in the wall, causing Link to crash into it and faint.

It is later revealed that Yuga intends to find and capture all Seven Sages to serve his evil plans. The evil wizard then heads to the Eastern Palace, with the intention of finding Osfala, another of the Seven Sages. Link follows suit, but once again arrives too late to save Osfala from being turned into a painting himself. Yuga, declaring Link an eyesore and a bother, attacks him, but the young hero soon overpowers him. Angry, Yuga casts a spell on him and turns him into a wall painting, then leaves, satisfied.

Yuga then wanders Hyrule in search of the remaining Seven Sages: Irene, Gully, Impa, Rosso and Oren. As Link is travelling throughout the land to obtain the Master Sword, Yuga transforms the remaining sages into paintings one by one.

Yuga the used the power of the Seven Sages to resurrect the Demon King and holder of the Triforce of Power, Ganon. Yuga and Ganon then merge, causing a combination of the two that takes on attributes and personality of both, Ganon's influence seemingly further corrupting Yuga as well.

Yuga/Ganon are summoned by Hilda after she attains the Triforce of Wisdom from Zelda. Hilda orders Yuga/Ganon to steal the Triforce of Courage from Link, but after being beaten and asked to give the Triforce of Power to Hilda, Yuga/Ganon instead steal her Triforce and engage Link once again, though they are defeated and destroyed.

Trivia

 * Yuga's name is derived from the Japanese word for oil paintings, a reference to his magical abilities.