Ghirahim

"Well... You put up more of a fight than I would have thought possible out of such a soft boy. But don't clap for yourself quite yet. That sword of yours is the only reason you still live."

- Ghirahim

Ghirahim (ギラヒム Girahimu)  is one of the two main antagonists of  The Legend of Zelda: Skyward Sword. He is the lord of the demons that are unleashed upon  The Surface during the events of the game. He is actively pursuing  Zelda, and is able to detect her presence. Though he initially views  Link  as no threat to his plans, as the game progresses, he grows increasingly frustrated with Link's interference.

Biography
At the outset of the game, although he is not seen performing the act, Ghirahim sends a huge, black tornado into the sky, knocking Link and Zelda off their airborne Loftwings. As Link begins his search for Zelda in Faron Woods, Ghirahim stealthily pursues him.

Ghirahim first confronts Link deep within the Skyview Temple, where he is trying to force his way through the door to the sacred chamber, where he senses Zelda. Earlier, an attempt to capture Zelda was foiled by Impa. Angered by his circumstances, he decides to take his frustration out of Link. During their battle, he criticizes Link for being a novice who telegraphs his moves. By the time Link defeats him, Ghirahim can no longer feel Zelda's presence; he decides to stop toying with Link and make his departure, but not before threatening Link on his life, should their paths cross again.

The two encounter one another again inside the Earth Temple, where Zelda was held captive. Furious to learn that she escaped his lackeys a second time, Ghirahim once more decides to take his frustrations out on Link. He summons Scaldera in hopes of the ensuing battle relieving his anger and stress.

After Link travels through the Lanayru Mining Facility, he finally meets up with Zelda and Impa at the Temple of Time. But the reunion is cut short when Ghirahim appears, creating a barrier to impede Link. He then goes after Zelda, but is stopped by Impa's own barrier. During the confusion, Zelda tosses Link the Goddess's Harp. Ghirahim manages to pierce Impa's barrier, but is unable to finish her, as Link interferes, buying Impa and Zelda enough time to enter the Gate of Time. Just as they do, Impa destroys it to ensure that Ghirahim cannot follow them into the past. Greatly incensed by Link's interference, Ghirahim retreats, vowing that, when next they meet, he will make Link suffer so badly that the boy will deafen himself with the sound of his own screams.

Later on in Link's quest, Ghirahim awaits the hero in the boss room of the Ancient Cistern, regally perched atop the giant statue, Koloktos. After expressing his annoyance regarding the fact that Link is still interfering with his plans, Ghirahim brings the inanimate Koloktos to life with a snap of his fingers before taking his leave.

The two then cross paths yet again at the Fire Sanctuary, where a rather upbeat Ghirahim claims he and Link are bound by a "thread of fate", then shows him a series of old drawings that confirm the existence of a second Gate of Time. Since Ghirahim does not yet know the location of the second gate, he offers to spare Link's life if he reveals the location of the Gate of Time. Link refuses, leading to another fight between the pair. At the start of the battle, Ghirahim reveals a portion of his true form: as a cracked pattern of black lines crawls up one side of his body, his arms blacken. Despite this, Link manages to defeat Ghirahim again, forcing the enraged demon to retreat.

After using the Triforce to wish for the destruction of Demise, Link reunites with Zelda just as she wakes up from her long slumber. The reunion is interrupted when Ghirahim appears and captures Zelda, then declares that he will go to the past and revive Demise there. Groose tries to stop him, but Ghirahim kicks him aside. Ghirahim begins the ritual to free Demise as Link arrives to stop him. Ghirahim attempts to slow him down by erecting a magic barrier and summoning a horde of Bokoblins, but Link manages to fight his way through the horde and confronts Ghirahim.

Having had enough of the youth's constant meddling, Ghirahim decides to put an end to Link in his strongest form: a dark-skinned, white-haired humanoid creature with metallic skin, much like Fi. He also reveals his true nature as Demise's sword. This leads to their final showdown. Though a losing effort, Ghirahim reveals the ritual was continuing all throughout their fight. Zelda's soul is ripped from her body, and Demise regains his original form. Soon after Demise's revival, Ghirahim is changed by his master back into his true form as Demise's sword, to Ghirahim's apparent delight. After Link defeats Demise, the sword that is Ghirahim shatters, putting an end to his existence.