Lancelot

is the son of Ban and Elaine. At the age of 10, he went missing with his attendant Jericho. Six years later during the events of Mokushiroku no Yonkishi, he reappeared as a mysterious talking fox named and accompanied Percival in his journey, and later returned to his human form. He is also a Holy Knight of Liones, and one of the Four Knights of the Apocalypse.

Appearance
Lancelot appears to inherit both traits from his parents, although he inherited his mother's facial features mostly causing most people to mistake him for a girl after first meeting him. He has short blonde hair, but later cut it much shorter to look more like a boy, while revealing the scar he got from Tristan in a fight.

As Sin, he appeared as a normal fox with a coat of pink fur covering most of his skin except for his underside and the tip of his tail. He wears a collar with a small, crystal pendant around his neck and his eyes often appear closed.

Personality
At first appearance, Lancelot appears to be cheerful and friendly around a con artist merchant, seeming naive and innocent, but later revealed a more ruthless side similar to his father after seeing that the merchant was tricking the fairies with junk to get their treasures.

As Sin, he was shown to be blunt and straightforward in his conversation with Percival and Donny, after saving them from Pellegarde. At first, he showed no interest in Percival as he didn't bother speaking with him until he had reason to believe that the boy was one of the Four Knights of the Apocalypse, as he claims he is part of a group who opposes King Arthur Pendragon and the Holy Knights of Camelot who hunt down for the four in hopes of preventing the prophecy of the world's destruction at their hands.

His attitude shows he approaches matter in a business-like manner and casually dismisses Percival's retort that he won't destroy the world, claiming that despite what the boy intends, it is destined to happen and cannot be prevented.

History
Lancelot was born from Ban and Elaine becoming the prince of the Benwick Kingdom.

He visited Liones on prince Tristan's tenth birthday, having a sparring fight with him that left him with a head injury which awakened his ability to read hearts. There he met his father's former companions, including Gowther who showed him Ban's history with the Seven Deadly Sins. After learning how his father was respected as a knight, Lancelot developed a great admiration for him and a desire to be recognized by him.

Abilities and Equipment
As the son of Ban and Elaine related to the Fairy Royal Family, Lancelot has had above-average combat skills and physical abilities since the age of 10, with better reflexes than an adult Human. he can easily capture and or send it flying by hitting him hard enough. He is strong enough to almost completely shatter a rock with a makeshift spear.

At age 16, his physical abilities and combat skills have improved such that he can kill Doronach with a single boost. During his duel against Arthur, he was able to match and even surpass him, thus forcing him to use his Chaotic Magic. Tristan states that after his "disappearance", Lancelot's power had increased until it completely exceeded his own, allowing him to match the Seven Deadly Sins.

Lancelot has great speed and perception, being able to easily track Fiddich, despite his Haste, even blocking him with a simple kick before he begins to run. He also shows great skills in archery, having enough accuracy to strike the opponent's pressure points with deadly effects.

Abilities

 * Unknown Power: Lancelot possesses an unknown power capable of destroying and disintegrating targets with powerful magical energy. Lancelot states that since no weapon can withstand this power, that's why he seeks to make a suitable weapon from Dubs.
 * By pointing a weapon at an enemy, Lancelot fires a beam of light that chases the target at high speed pulverizing them.
 * Heart Reading: Much like his mother and the other Fairies, Lancelot is able to decipher the thoughts, memories, and emotions of those around him through simple eye contact. His Heart Reading seems far superior to that of other Fairies, as he seems able to project his own thoughts into the minds of others.


 * Transformation: Much like his maternal uncle and the other Fairies, Lancelot is able to alter his physical appearance. He usually uses it to transform into a small pink fox named "Sin", but can also impersonate a simple Fairy. His Transformation seems far superior to that of other Fairies, since he seems capable of adopting the abilities of those whose appearance he takes, such as the Levitation of Fairies or the superior strength of Giants.
 * Levitation: When he transforms into a Fairy, Lancelot can float in the air by thought. Strangely, he can't levitate without his wings.

Weapons

 * Bow and Arrows: Lancelot primarily uses a bow and arrows as no other weapon can withstand his Magical Power, as arrows are easier to use and replace.

Ban
Lancelot has a close and loving relationship with his father. Despite being frustrated with his occasional lack of disposition as king, Lancelot has great admiration for him and constantly tries to act like a responsible adult so that he will recognize and praise him.

Elaine
Lancelot is shown to have a good relationship with his mother, being able to talk to her about things that he does not tell his father.

Jericho
Lancelot and Jericho have a teacher-disciple relationship. Jericho seems to harbor a certain attraction for him, leading Lancelot to see her as a pervert. Even so, Lancelot always considered Jericho as an older sister and part of his family.

After finding out that Jericho had become a Holy Knight of Camelot, Lancelot leaves astonished to know that Jericho harbors a genuine romantic love for him.

Trivia

 * Lancelot is named after, who is one of the Knights of the Round Table in Arthurian mythology where he typically figures as King Arthur's greatest companion and one of his greatest knights, and his parents were King Ban of Benoic and Queen Elaine.
 * Lancelot is right-handed.
 * Unlike his parents, Lancelot shows a high tolerance to alcohol despite being a child.
 * Although Lancelot and Tristan were born 2 years after the Holy War, they are confirmed to be 16 years old even though it's only been 16 years since the Holy War as of 4KoTA; meaning there are time discrepancies and contradictions in which they should either currently be 14 years old, since it has only been 16 years since the Holy War, or the Holy War should be 18 years ago to coincide with how they are 16 years old.
 * Lancelot gives off a faint scent of lemon.
 * He learned Fukushima dialect by ear rather than being taught by Puora.
 * Lancelot doesn't prefer the mother-like type of girl, unlike Tristan.
 * Lancelot's sense of time is more like a human's, as to a fairy's.
 * An untransformed Lancelot can't fly like his mother Elaine, because he is also a human.
 * Lancelot prefers salty or sour food.
 * Lancelot is ranked number two out of the Four Knights when it comes to who's the best at cooking.

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Lancelot