Dark Sun Gwyndolin guards the honorary tomb of Lord Gwyn in Anor Londo. The tomb can be found by using the spiraling staircase on the rotating bridge while the bridge is in its lowest position and descending to the second accessible bonfire. If the player wears the Darkmoon Seance Ring in this location, Gwyn's statue will vanish and Gwyndolin's fog door will be revealed. The player can then either pledge allegiance to him and his Blades of the Darkmoon or dare to trespass the fog door behind of which he dwells in, thus commencing the boss battle.
If the player does not yet have the Darkmoon Seance Ring, they can kill Gwynevere instead, which at that moment will be revealed to be just an illusion set up by Gwyndolin himself. The entrance to Gwyndolin's boss room will be accessible at the same aforementioned location.
Gwyndolin was the last-born son of Lord Gwyn and the only true remaining deity to guard Anor Londo. He was raised as a daughter due to his strong affiliation with the moon's power. He uses the illusion of the princess Gwynevere to help hide his repulsive appearance.
By the events of Dark Souls III, Gwyndolin has become the main figure of authority and worship in Anor Londo, taking his father's title as King of the Gods. As well as continuing to watch over those who link the Fire, Gwyndolin appeared to be tracking down descendants of the gods who fled Anor Londo millenia prior and bringing them back to Irithyll. The exact reason as to why he was doing this is unknown, though it could be that he was trying to ensure that the power of the gods continued to live on.
He ruled alongside his apparent sister, Yorshka, a young crossbreed girl. Although the exact nature of their familial ties is unclear, it is known that Gwyndolin thought very highly of her as he provided her with his own personal Chime as well as her name.
A former denizen of the Painted World and ally to Saint Aldrich of the Deep; Sulyvahn, would later inflitrate the city of Irithyll and the Darkmoon system in order to usurp it from within. It is highly implied that Sulyvahn worked his way up the power system in Irithyll, all the while turning the Knights to the worship of the Deep.
Gwyndolin would later become stricken with an illness so severe that he could no longer lead his own Covenant or the city. As he was too sick to lead his own Covenant, its leadership passed to Yorshka, who was shortly thereafter imprisoned by Sulyvahn who took complete control of the city and claimed the title of Pontiff. The God of the Darkmoon was then imprisoned himself, inside the ruins of the old cathedral of Anor Londo.
After Aldrich was revived as a Lord of Cinder, he quickly became disillusioned with his throne and journeyed to Irithyll in order to consume the imprisoned god. Once he arrived, he began to slowly consume Gwyndolin, who was most likely powerless to fight back, both physically and spiritually, gaining access to his knowledge of Priscilla and Nito while he was dreaming. However, the Unkindled arrived halfway through consumption and Aldrich took control of Gwyndolin's body/power in order to defend himself as he was vulnerable while consuming the god. Gwyndolin was released from his gruesome fate when the Unkindled slew the Lord of Cinder, ending the god's torment and finally allowing him to die.
Gwyndolin's boss battle takes place in a seemingly neverending corridor.
He is not a very difficult boss if the player has decent dodging skills. Of his three attacks, two can be avoided by hiding behind pillars, while the last one is more powerful and fast (he will tend to use the Sphere Shot after Orb Spread if the player is hiding behind pillars). The main issue in this fight is reaching him, as he will teleport away when the player approaches (equipping the Ring of Fog may increase the time available to attack before he teleports), meaning that the best time to run up to him is when he is just finishing off his Arrow Spread, as he takes a few moments to recover. Gwyndolin can still be damaged while he is in his teleporting animation and for a split second after actually moving, so it is possible to deal considerable damage at that moment.
Both the Orb and Arrow Spread attacks are avoidable by hiding behind one of the pillars on either side of the corridor. The Sphere Shot, on the other hand, will go through walls, inflicting full damage if not blocked or avoided. The Orb Spread and Sphere Shot are Magic-based, though, so a shield that can block 100% physical damage and has good Magic resistance, like the Crest Shield, is recommended for this fight.
While devastating, both the Sphere Shot and Arrow Spread attacks have no tracking whatsoever and are easily avoided simply by running diagonally. If a player does not want to risk it too much, a good strategy to catch up to him is by moving from pillar to pillar until they are about two pillars away from Gwyndolin and then wait until he shoots his Arrow Spread. This attack can consist of two-to-four arrow barrages. Wait until he finishes the second one and go for him, if he shoots any subsequent arrows, dodge them by running diagonally.
Alternatively, once Gwyndolin teleports the first time upon entering the tomb, it is possible to move closer to him to a point just outside his aggro range; then, by equipping the Hawk Ring and using the Dragonslayer Greatbow, the player can easily defeat him from range without him retaliating.
Gwyndolin will slightly raise up and shoot multiple arrows at the Player. Blockable as they do not use much stamina. Alternatively, the Player can stand behind the pillars so that the arrows hit the pillar instead. From New Game+++, if all the arrows hit a non-blocking player, death is certain.
Gwyndolin will charge up his catalyst and shoot a cluster of homing blue orbs at the Player. Deals heavy damage if they connect. Recommended action is to hide behind the pillars as the orbs cannot go through them, or roll under it.
Gwyndolin will charge up his catalyst and shoot out a huge magic sphere which travels at great speed. Possible to dodge by rolling to the sides or directly under it or blocking with a good magic shield. The sphere can pass through the pillars, so hiding behind them is not recommended.
|Physical Defenses||Elemental Defenses||Resistances|
These stats are sourced from FuturePress's Official Dark Souls Strategy Guide.
Soul of Gwyndolin
|Greeting||Halt! This is the tomb of the Great Lord Gwyn. Tarnished, it shall not be, by the feet of men. If thou art a true disciple of the Dark Sun, cast aside thine ire, hear the voice of mineself, Gwyndolin, and kneel before me.|
|Kneel||O Disciple of the Dark Sun. Thou hast journeyed far; Hear my voice. If thou shalt swear by the Covenant, to become, A shadow of Father Gwyn and Sister Gwynevere, a blade that shall hunt the foes of our Lords; Then I shall protect thee, safeguarding thy person with the power of the Darkmoon.|
|Entering the covenant||Very well. Now thou art a Blade of the Darkmoon. Huntheth the enemies of the Lords, by the power of the Dark Sun.|
|Greeting after joining the covenant||Welcome back, Blade of the Darkmoon. If mine power be need'st, I shall assist thee.|
|Greeting after joining the covenant ×2||Very well, Blade of the Darkmoon. Please state thy wish.|
|After killing Gwynevere||Thou that tarnished the Godmother's image. I am Gwyndolin, and thy transgression shall not go unpunished. Thou shalt perish in the twilight of Anor Londo.||???|
|Entering the fog after killing Gwynevere||Heretic... First thou offendeth the Godmother, and now thou see fit to trample upon the tomb of the Great Lord. I am the Darksun, Gwyndolin! Let the atonement for thy felonies commenceth!||???|
|Killing him||O Heretic, swathed in Dark... An eternal curse upon thee...||???|
|Entering the fog as a member of the Blade of the Darkmoon||What foolishness... Why would a Blade of the Darkmoon trespasseth upon the Great Lord's tomb? Mark the words of mineself, Gwyndolin! Thou shalt not go unpunished!||???|
- Gwyndolin's corridor is not infinite and has a certain length. If he is forced to the end of the corridor, he won't be able to teleport anymore and will be at the player's mercy. He will attack relentlessly, trying to defend himself, but as his attacks are mostly designed for long range battle, just circling him will make most of them miss.
- Defeating Gwyndolin grants Domhnall the ability to sell the Moonlight Set; most notably his helmet, which increases the power of all magic.
- The Darkmoon Knightess will become hostile if Gwyndolin has been challenged, regardless of whether he was defeated or not.
- Likewise, if Gwynevere was slain, the Darkmoon Knightess will become hostile as well, as such an act will be considered an offense against Gwyndolin.
- Dark Sun Gwyndolin's boss fight has the same soundtrack as the Moonlight Butterfly.
- Gwyndolin has breasts visible on his cloak, however, in Aldrich's boss fight, Gwyndolin's bare upper chest is visible, and lack breasts.
- If Gwyndolin is fought before defeating Ornstein and Smough, Knight Solaire can be summoned from his usual spot. While he will not enter the arena to aid the player in the battle, a Sunlight Medal can be acquired at the end of the fight.
- If the player uses the Darkmoon Seance Ring to enter Gwyndolin's chamber and kills him without destroying the illusion of Gwynevere, both Gwynevere and the illusion of sunlight in Anor Londo will persist after his death.
- Cut content from Dark Souls III reveals that it was possible to obtain a consumed finger of Gwyndolin, presumably after defeating Aldrich, and give it to Yorshka for her to keep as a memento.
- Damage is listed per arrow.
- Damage is listed per orb.
- Darkmoon Seance Ring description.
- Moonlight Robe description.
- Darkmoon Blade Covenant Ring description.
- Japanese description of the Soul of Pontiff Sulyvahn which refers to Gwyndolin as 主神 which can be translated to "main god/chief god/king of gods".
- Irithyillian character preset description.
- Yorshka's Chime description.
- Snap Freeze description.
- Pontiff Knight Curved Sword description.
- Cathedral Evangelist found within Irithyll.
- Company Captain Yorshka's dialogue.
- Soul of Pontiff Sulyvahn description.
- Description from Aldrich's Cinders of a Lord.
- Soul of the Deacons of the Deep description.
- Darkmoon Bow description.
- Lifehunt Scythe description.
- Evidence for Gwyndolin still being alive when the protagonist finds him can be found by listening to the sound files, which depict him in pain both during the fight and when he is passive.