Vivian

The Masked Holy Knight is an enigmatic Holy Knight directly serving under Great Holy Knight Hendricksen.

Appearance
The Masked Holy Knight's facial appearance is unknown. She appears to have a fair size of cleavage and light purple eyes.

Armor
The Masked Holy Knight wears a regal light red Holy Knight armor with a long dress similar to Merlin in her previous armor ten years ago, and wears an unique helmet resembling hands enclosing on her face with one visor. She wields an unusually large claw-like staff.

Personality
The Masked Holy Knight is a calm, brooding and cunning woman who served Hendricksen with much if not greater loyalty than Helbram. She has an extreme hatred of pigs shown when she encountered Hawk to which she snapped and teleported the talking pig to a faraway place from herself. The Masked Holy Knight also show great resentment towards the Seven Deadly Sins for reasons unknown as she stated to have loved them once before and encouraged Gilthunder to finish Meliodas off through telepathy. Despite that she has some sense of honor as she allowed Elizabeth's wish for her sister Margaret to be released from her cell, although mocked the latter's cowardly nature and allowed the king and his daughter to have a brief family moment before proceeding with the ritual.

Kingdom Infiltration arc
When the Seven Deadly Sins discuss in Boar Hat as to why the Holy Knights are focused on targeting Elizabeth, the Mask Holy Knight reveals herself by telling them that the princess of Liones is the last remaining key of the Coffin of Eternal Darkness to release the Demon Clan before teleporting herself with Elizabeth, and unknowingly Hawk to the kingdom. Her actions greatly angered Meliodas as he and his fellow Sins Ban and Gowther immediately launched a risky rescue attempt to save Elizabeth only to face the entire Liones' Holy Knights. Later when Elizabeth regains consciousness in a cell, the Masked Holy Knight welcomed her back to the kingdom before teleporting away. At some time after discovering Elizabeth's escape, she teleported before Hendricksen and reported the situation while noticing King Arthur Pendragon of Camelot and his cloaked friend being surrounded by the Great Holy Knight and his subordinates. After receiving orders to recapture the princess and relocate her to a place where the Sins cannot reach her, the Masked Holy Knight bade farewell to the young king before teleporting away again.

Shortly after, the Masked Holy Knight found Elizabeth near Margaret's cell, informing her that the First Princess allowed herself to be imprisoned due to her cowardice when she was accused by Elizabeth and attempted to take her only to be pushed back by Hawk. Seeing a talking pig in front of her, she expressed disgust and teleported Hawk to the Horn of Cernunnos telling him to disappear, which knocked Elizabeth unconscious. The Masked Holy Knight then allows Margaret to leave her cell granting her captive's wish of her sister's freedom, if she have the courage to do so. She then contacted Hendricksen that she recaptured Elizabeth and was given orders to keep the princess away from the Sins as possible. She asked permission to aid Hendricksen but the latter refused, then she gave in and informed him that she'll be sending her cute little knight to aid her superior in battle against Meliodas.

Taking the princess to the king's heavily guarded chambers, she allowed a brief father-daughter reunion as Elizabeth and her father before proceeding with the ritual while observing the battle as she noticed Gilthunder seemingly overpowers Meliodas and telepathically compells him to kill the Seven Deadly Sins she once loved. Then suddenly Threader, captain of the Dawn Roar, appeared before the doors of the king's room having killed several Holy Knights demanding an audience with the king. Threader forcing his way to the King door, but was protected by Perfect Cube while the king begged Threader to stop. The Unnamed Holy Knight went to see Meliodas battle against Gilthunder which surprised her as Meliodas was overpowering Gilthunder and when the Masked Woman said Meliodas name, Elizabeth grew happy to know Meliodas came for her. The Masked Woman told Elizabeth not to get too happy as Meliodas will be defeated soon, but Elizabeth told her that Meliodas will not loose. After the battle gotten much more intense, the Masked Woman went to the battlefield and help Gilthunder and Hendricksen, leaving Elizabeth and King Liones alone for the moment. As the battle rage on, Masked Holy Knight readies herself with Hendricksen and Gilthunder in their battle against Meliodas.

As the trio started to overpower Meliodas and knock him next to a building, Masked Holy Knight amused that Meliodas is mortally wounded as he had not used Full Counter or his Demon powers, but Gilthunder sense that Meliodas power is increasing instead of decreasing. Hendricksen said that they have miscalculated and knew where the eerie premonition came from. Hendricksen found out that the reason for Meliodas not fighting back is because Meliodas is heightening his utmost power and senses to unleash a one decisive attack. The Holy Knights used all of their power together to finish off Meliodas before he could unleash his attack. Hendricksen summon Hellblaze, Gitlhunder used Sword of the Thunder Emperor, and the Masked Holy Knight use Quad-Element Destroyer as Meliodas summon his attack, Divine Slayer. However, Margaret came running toward the battlefield to stop Gilthunder from hurting his hero, Meliodas. However, Meliodas spot something close to Margaret and use his Divine Slayer to kill an invisible creature like demon that was next to her. As Meliodas grin of destroying the creature, the Masked Holy Knight attack hit Meliodas, heavily injuring him. Hendricksen rush to Meliodas to finish him off, Gilthunder appeared and cut off Hendricksen arm. Gilthunder, with a tear in his eye, smile and thanks Meliodas for setting him free from the spell as Meliodas smile.

The Masked Holy Knight was in shock to see Gilthunder betraying Hendricksen until Meliodas explain he knew about Gilthunder being force to work with the Holy Knight and Margaret being hold hostage. The Masked Holy Knight ask what made him realize the event, which Meliodas explain that the creed and the way Gilthunder said he was stronger than the Deadly Sins was some kind of code or charm if he was ever in trouble which Meliodas give him ten years ago, and when Gilthunder said those word back in the White Dream, he knew he was being watched and someone being taken hostage. The Masked Holy Knight found it as a absurd lie, as he was fighting against Gilthunder with an all out battle, but Meliodas point out that Gilthunder put his life on the line for the woman he loves, and he put his life on the line too, as it is how friendship between men works.

Abilities/Equipment
Not much is known of the Masked Holy Knight's power but it is presumed that she is powerful as any of the Holy Knights and is noted to be a Great Holy Knight class according to King. She has the ability to teleport in great distances in a flash and has telepathy to which she can communicate mentally with others. She also has the ability to levitate like King, Helbram and Merlin.

Weapons
The Masked Holy Knight possess a claw-like staff which work in conjunction with her teleportation power.

Abilities

 * By performing a hand sign and tracing a rectangle through the air with her fingers, the masked Holy Knight is able to instantaneously freeze her opponent. The target is rendered immobile while frozen.
 * The masked Holy Knight traces her hand through the air in a distinct circular motion. Through this gesture she is capable of changing the trajectory of an attack.
 * A technique that allows the masked Holy Knight to amplify the abilities of her allies, making their attacks considerably more powerful.
 * A formidable technique where four elements (specifically; water, earth, fire and air) are summoned and fused into a single, devastating energy attack that is fired at the enemy. The attack creates a large explosion upon impact.

Battles

 * Meliodas vs. Hendricksen, Gilthunder & Masked Holy Knight: Lose

Trivia

 * The Masked Holy Knight hates pigs.