Yuga Ganon is the joint form of Yuga and Ganon that serves as the primary antagonist and final Boss of A Link Between Worlds.[note 1] The beast results from Yuga fusing with Ganon after the former resurrects the latter, and takes on the combined appearances and abilities of the two.
In Lorule, Yuga uses the descendants of the Seven Sages along with Princess Zelda to resurrect the Demon King and holder of the Triforce of Power, Ganon, who Yuga claims will help him attain true beauty. After releasing Ganon from his seal in darkness, Yuga proceeds to fuse with Ganon's form and the Triforce of Power,, transforming into a being that takes on the physical attributes of both Yuga and Ganon. Now possessing the Triforce of Power, Yuga Ganon attacks Link, but his attack is restrained by the magic of a mysterious princess named Hilda, who informs Link that she can only hold Yuga Ganon at bay for so long and welcomes the young hero to her kingdom, Lorule. She informs the young hero that she knew of Yuga's plot to abduct Hyrule's Sages and Zelda, but had failed to stop him, allowing Yuga to use them to siphon Ganon's power in order to gain enough power to destroy both Hyrule and Lorule. Hilda asks Link to awaken his full potential in order to defeat Yuga by stealing back the Paintings of the Seven Sages, which have been sent to different locations throughout Lorule as a backlash from Yuga's transformation.
After rescuing the Seven Sages and attaining the Triforce of Courage, Impa reveals to Link that Ganon is returning and that he must travel to Lorule Castle to stop the Demon King. After reaching the top of Lorule Castle, Link finds Princess Hilda, who tells him the legend of how Lorule fell into its current state. Upon finishing the tale, Hilda steals the Triforce of Wisdom from Zelda and summons Yuga Ganon, ordering the beast to steal the Triforce of Courage from Link, but Yuga Ganon is defeated in battle. Princess Hilda, still believing that her court wizard is loyal to her, orders him to give his Triforce of Power to her. However, Yuga Ganon reveals that he has no concern for Lorule's fate, and merely planned to remake Lorule in his own image, using Ganon in his plans. Yuga Ganon promptly turns Princess Hilda into a Painting and absorbs her along with the Triforce of Wisdom, transforming into an even stronger beast. Stating that he will soon take his rightful place among the gods, Yuga Ganon engages Link in a final battle for the Triforce of Courage, but he is defeated and finally destroyed, releasing Hilda and the Triforce pieces.
In the first phase of the fight, Yuga Ganon attacks in a similar way to how Ganon does in A Link to the Past. Yuga Ganon frequently warps around the arena, and does so more often as he takes damage. In the first stages of the fight, Yuga Ganon mainly attacks by thrusting his Trident at Link, or slashing the young hero with it, much like a Sword. Both attacks can be avoided by running out of the way fast enough, but extra caution should be taken when attempting to attack Yuga Ganon with the Sword, as it will make Link more vulnerable to Yuga Ganon's slash attack. The safest way of hitting Yuga Ganon without getting hit is to dodge his Trident attacks, then quickly attack him from behind to avoid being struck should Yuga Ganon attack soon thereafter. Eventually, Yuga Ganon will start throwing his Trident at Link, and occasionally warp out of the arena to launch energy balls from the sky. These energy balls appear immediately above Link, so the young hero must keep running to avoid them all. Eventually, the fight will end, and the second phase will begin.
Princess Hilda casts a ring of dark magic around the room prior to the fight, preventing Wall Merging.
In the second phase of the fight, Yuga Ganon transforms Hilda into a Painting to absorb her power and that of the Triforce of Wisdom. Yuga Ganon will initiate the fight by throwing a blue ball of energy at Link, which he must reflect back at him in a game of Dead Man's Volley, in which the Net can also be used as in earlier games. After several exchanges between them, Yuga Ganon will be struck by his own magic and get stunned, then merge into the wall as a Painting. Princess Zelda, speaking from her Painting on the wall, will then give Link the Bow of Light, so he can attack Yuga Ganon while merged inside the wall. Link must merge into the wall and shoot Yuga Ganon directly with the Bow of Light. The evil beast will block the Arrow and try to stop it in its track, exposing his back. Link must take this chance to emerge out of the wall, get behind Yuga Ganon and shoot him in the back, forcing him out of the wall and rendering him vulnerable to his Sword slashes. Yuga Ganon will then warp out of the arena, and cause numerous fireballs to shoot out of the walls. These fireballs will turn into bats, which Link must avoid. This strategy must be repeated twice more during the fight, but with key differences: Yuga Ganon will respond to the second Arrow fired at him by charging violently and rapidly at him. Link must quickly emerge out of the wall and back in to shoot him before he ends the charge. The third time around, Yuga Ganon will instantly block any Arrows fired at him, and turns around too fast for Link to quickly merge behind his back. Link must then shoot away from him so the Arrow will fly all the way across the wall and hit Yuga Ganon. This will force him out of the wall one last time and render him vulnerable to the finishing move, which can be dealt with any weapon that inflicts damage.
- The weapon wielded by Yuga Ganon appears to be a combined version of Ganon's Trident and Yuga's staff-brush.
- The music which plays during the first phase of the Yuga Ganon battle is a remixed version of the battle with Ganon from A Link to the Past.
- The beast is only referred to as "Yuga" or the "Demon King" in-game. The name "Yuga Ganon" comes from the Prima Official Strategy Guide.
- The Legend of Zelda: A Link Between Worlds Prima Official Game Guide (Prima Games) pg. 286
- "You've arrived just in time! A splendid collection, don't you think? All Seven Sages, and Zelda herself... But even they pale in comparison to my NEXT artful creation. ME! I will use the Sages to reach the one who shall help me attain true beauty. I mean, of course... GANON!" — Yuga (A Link Between Worlds)
- "Behold! The Triforce of Power! Join with me! Let us destroy all ugliness in this world or any other. We shall be TRULY superior!" — Yuga (A Link Between Worlds)
- "Oh, Hero of Hyrule, I can hold the beast at bay for so long. It should prove enough time to bid you a most sorrowful welcome to my kingdom. Welcome to Lorule. My name is Princess Hilda and I have failed you in every way." — Princess Hilda (A Link Between Worlds)
- "I knew Yuga planned to slip into your world to abduct Zelda and the Sages. I...I couldn't stop him. Now he has used them to summon the Demon King and siphon his power. Yuga's appetite will soon consume our worlds. Hyrule and Lorule-the beast's for the taking." — Princess Hilda (A Link Between Worlds)
- "I'm afraid I must ask you to do what I cannot-defeat the beast. To do that, you most awaken your full potential, Hero of Hyrule. I sense that the paintings of Hyrule's Seven Sages are being sent to the far corners of Lorule. You must steal those paintings back. The secret to Yuga's defeat lies in uniting your friends!" — Princess Hilda (A Link Between Worlds)
- "As the Princess of Lorule, it is my duty to save my kingdom. So I know you'll understand when I say... I must have your Triforce of Courage!" — Princess Hilda (A Link Between Worlds)
- "Yuga! I command you! Seize the Triforce of Courage from him! Lorule shall be reborn!" — Princess Hilda (A Link Between Worlds)
- "Give me your Triforce of Power, Yuga! We mustn't be defeated! If we are, Lorule will be lost forever! Come now, obey me! Give it to me at once!" — Princess Hilda (A Link Between Worlds)
- "Ha ha ha ha... My dear, sweet, deluded Hilda...! What care have I to save your crumbling kingdom. It's no better than that hideous Hyrule. When the Triforce is mine, I plan to remake Lorule in MY image. Now you, my dark beauty, must serve your purpose." — Yuga (A Link Between Worlds)
- "Ha ha ha! I shall soon take my rightful place among the gods! And then the beauty of destruction will rain down upon this world! Now, I'll be taking that last piece of the Triforce from you, worm! How far you've wriggled! But at last you know your true destiny-to give me what's MINE!" — Yuga (A Link Between Worlds)