Merlin

is a member of the Seven Deadly Sins and the Sin of Gluttony with the symbol of the Boar. Gowther states that she is the person who attacked and rendered Meliodas unconscious during the ambush ten years ago. She was regarded as the greatest mage in Britannia and is the master of Vivian as well as a teacher of King Arthur of Camelot.

Appearance
Ten years ago, she was wearing a full set of armor with a unique helm that resembles a beetle like the rest of her fellow Seven Deadly Sins except it has a long skirt on it and wears high heeled boots. Merlin's wanted poster depicts her as a young woman with long black hair. Merlin's Seven Deadly Sins tattoo is located at the left side of her neck and is colored red hence her nickname "Crimson Pig".

After ten years, she first wears a long violet cloak that covers her whole body. However, when the cloak was ripped apart, Merlin is shown to look very similar to her appearance on her wanted poster. She is seen as a slim, attractive woman with three beauty marks below her right eye. Her outfit is of a highly revealing and open fur collared long coat with heart shaped buttons, short shorts with a heart on it, and thigh high boots. Merlin's hair is at shoulder length and light grey, somewhat shorter than her hair in her wanted poster. She is also seen to be incredibly tall, dwarfing fellow Sins Meliodas and King.

Personality
Prior the Seven Deadly Sins' supposed betrayal, Merlin's demonstrates a playful nature, telling her teammates that their meeting with the Great Holy Knight might turn out to be a scolding from their superior for destroying the Great Druid Altar. Merlin is also apologetic asking for her captain's forgiveness for knocking him out. She enjoys mocking and challenging others, teasing her apprentice Vivian for losing herself to rage again. Merlin tends to use anyone as a magical guinea pig to test out new techniques she learned so long as the results are good as Meliodas noted.

History
Not much is known of her past, but Merlin joined the Seven Deadly Sins after committing a sin related to her title the Boar's Sin of Gluttony. It is known that Merlin participated in missions the Seven Deadly Sins were assigned to; such as the defense of the Maiden Castle of Edinburg from a group of vampires, and defeating a Tyrant Dragon. At some point of time, Merlin and her fellow Sins met with King Liones who was accompanied by young Elizabeth, according to Gowther.

At some point, Merlin gave Gowther an enchanted armor for yet unknown reasons. Merlin once took in Vivian as her apprentice in the arts of magic and constantly reminded her to fix that habit of losing herself to rage. Ten years ago, Merlin, along with the rest of the Seven Deadly Sins, were summoned to a castle to meet the Great Holy Knight, Zaratras after defeating a troll queen and accidentally destroying the Great Druid Altar. After they found him dead, all of the Sins were ambushed by Liones' Holy Knights. For a yet unknown reason, after Meliodas ordered the group to disperse, Merlin apologized to him and knocked him unconscious. At some point, Merlin joined the Kingdom of Camelot and became a mentor to the new king, Arthur Pendragon and traveled with him to Liones to free Bartra Liones from the Holy Knights.

Introduction arc
Merlin's wanted poster is displayed on a board in Boar Hat.

Armor Giant arc
Using his ability Invasion, Gowther saw in Meliodas' memory, that Merlin was the one that attacked and rendered Meliodas unconscious for unknown reason. Gowther also mentioned that since that time, he heard many rumors about her, but none of them leaded to her.

Kingdom Infiltration arc
As Merlin and Arthur travel to Liones with an army of Camelot's Holy Knights, the Great Holy Knight of Liones spotted the duo with their army due to their great power level and once the latter went to speak with Arthur, the king ordered Merlin to cancel the spell and revealed that the army was all an illusion to the Holy Knights shock. Hendriksen took the two in as they demand to meet the king, despite Hendriksen saying the king is sick. Hendriksen ambush them with Hendriksen fighting against Arthur while two strong Holy Knight fought against Merlin. However, Merlin easily won the battle and went to heal Arthur when he got hit by Hendriksen's Hellblaze. Arthur told Merlin to stay back while he fought to which Hendriksen started to question Arthur and Merlin ability. When Arthur was defeated by Hendriksen, Arthur started to blame himself as he was not strong enough, but the cloaked person told Arthur that he perform admirably and just surviving a fight against a Great Holy Knight of another kingdom is significant. The cloaked person said that Arthur's first battle was well done and should watch Meliodas battle as it would serve him in the future where he is destined to lead Britannia one day.

Later on, Vivian teleports the Holy Knights and the Deadly Sins to a forest in order to prevent them from rescuing Princess Elizabeth. Fortunately, the cloaked figure sends the group back to Liones and proceed on toying with Vivian, sending her to various locations, enraging her. The cloaked figure finally ends her toying, and a furious Vivian summons violent winds to attack her. Despite her cloak being tore apart by the winds, the woman is unharmed, and she is revealed to be Merlin of the Seven Deadly Sins. Everyone was either shock or happy to see Merlin, however, Meliodas was displease as he believe Merlin was the one who knock him out ten years ago and wanted answers from her, but decided to ask her later as they need to save Elizabeth and Bartra to which Merlin happily agreed and teleport the group to the Royal Chamber. The group was shock to be in the location so fast and notice that the Dawn Roar were there as well. As Meliodas was about to destroy the door, Merlin revealed that it would be impossible to break as it was protected by Perfect Cube, as it came from the Demon World and wouldn't be destroy with either strong or weak attack. Merlin used Absolute Cancel and break the spell, freeing Elizabeth and Bartra. During Dreyfus interrogation, Merlin revealed that Vivian was obsessed with Gilthunder and was willingly to take him and Margaret hostage.

After the situation, Bartra started to cough blood which alarm everyone until Merlin came and offer to heal him back in Camelot along with Arthur. As Merlin was about to leave through teleport, Arthur told her to wait as he went to Meliodas and offer him the title and rank of Great Holy Knight in Camelot as he believed that they were fated to meet. Everyone was surprised and shock at Arthur's offer, but Meliodas accept Arthur offer to Elizabeth dismay as Meliodas believed that since the kingdom is saved, Elizabeth is freed, and Dawn Roar will take over the Deadly Sins job, they would be no need of him in Liones. Arthur was joy to Meliodas acceptance, but Meliodas told him not yet as he need to be in the kingdom to restore it and he still has the Boar Hat to run. Meliodas tend ask Merlin if she will rejoin the Deadly Sins who said not right away and teleport along with the sick Bartra and the depress Arthur much to the team's displeasure. As a result, none of the three knew the next serious situation caused by Hendriksen. Later after Hendriksen's death and defeat, Merlin returned with King Bartra, recently recovered thanks to her new hidden technique from the Demon Realm to Liones but Meliodas criticized her for using the king as her magical guinea pig, which the Boar's Sin of Gluttony brushed it off so long as the result was good much to the king's chagrin.

Merlin then listened to the Holy Knights kneeling down before their king, asking for heavy punishment for their sins for blindly following Hendriksen and his evil plot but Bartra instead tells them to devote their power to the restoration of their kingdom and thanking the Seven Deadly Sins for saving the country. When Merlin quickly stopped Ban from trading blows with Gowther over Hawk's death, she asks the Goat's Sin of Lust where's his armor and tells him that she'll get him a new one after hearing his response. Merlin witnessed Hawk's revival as the Sins rejoice of their animal companion's return.

Current arc
As Liones being rebuilt, Meliodas and Hawk were watching over the injured Elizabeth as she sleep in her bed. Merlin appeared out of nowhere due to teleport, and stated that Elizabeth unlock her power without thinking which healed everyone else because she was thinking about others then herself. Even if Elizabeth had some power left, she still wouldn't heal herself which led to Hawk tearing up, believing that Elizabeth should at least thin about her health first. Meliodas and Merlin chat over the location of the Eternal Coffin of Darkness as it was no longer in Liones even with Merlin's "Location" magic technique as it was revealed that a strange bird appeared and fly to the east. Merlin revealed that she told Arthur that she will be away for a while as she will rejoin the Deadly Sins for the time being which made Meliodas glad as it could saved them, but still feel unease with her suspicion smile. Meliodas revealed that he still wanted to know what happened ten years ago while Merlin seem interested in Hawk, calling him a hero which made the tiny pig happy and befriend Merlin. Meliodas realize that he forgot something and went back to Elizabeth room while Hawk yelled at him that he shouldn't do something weird to Elizabeth while she sleeps.

When Merlin and Margaret appeared in front of Elizabeth's room, Meliodas step out of the room with a grin which made some of them worried that he did something weird, until it was revealed that Elizabeth is up and healed for unknown reason. Hawk was overjoy to see Elizabeth standing again, but wondered why she is moving again. Merlin seem to know what Meliodas did as it was revealed that Meliodas held her hand and told her that he can't live without her which made her wake up. At some point earlier, Merlin gave Diane Minimum Tablets to shrink down to human size while the latter's tattered clothes are in repair for a while.

Abilities/Equipment
Merlin is said to be the greatest magician in all of Britannia, and she was able to defeat some of the greatest Holy Knights in Liones and easily overpowered Vivian, the current most prominent mage of Liones. Merlin is able to cast illusions, having produced a large powerful mirage army that tricked even the Great Holy Knights. Merlin has demonstrate the ability to levitate, similar to Helbram and King. She also has the ability of teleportation which allows her to instantaneous transfer a group or individual objects to a completely different locate. Merlin has used a weapon which resembles a crystal ball. Merlin is resistant to magic attacks as she remained unscathed of Vivian's ferocious wind attacks only her cloak ripped apart. Merlin mentioned to have a new hidden technique from the Demon Realm that somehow restored King Bartra back to full health.

However, Merlin can't use real healing power as only Druids from the eastern forest could perform an ability like that.

Abilities

 * By placing her hands over a spell, Merlin is able to completely erase it from existence.
 * Merlin is able to find items or person through sensing them in a large areas.

Magic Items

 * No. 172: Minimum Tablets: Based on the spores released by the Chicken-Matango, the Minimum Tablet is capable of shrinking the size of the consumer. The effects of one single pill can endure up to seven hours.

Seven Deadly Sins
Not much is revealed of Merlin's relationship with her fellow Sins but ten years ago, she playfully speculated that they were summoned by the Great Holy Knight only for a scolding about their last mission.

Meliodas
Merlin highly respects her captain, and possibly had a close relationship with him as she believes that he may forgive her for what she has done to him ten years ago. Whenever Meliodas criticized her for using someone like the king as a magical guinea pig for testing out new techniques, she brushed it off.

Ban
Merlin tends to calm down Ban when he threatened to attack Gowther in anger over the Goat's Sin of Lust's lack of empathy of Hawk's apparent death.

Gowther
Merlin and Gowther are both members of the Seven Deadly Sins. Gowther seem to hold a history with Merlin as she was the one who give him his armor and Merlin seem to defend Gowther clueless and emotionless nature.

Diane
Merlin and Diane are on good terms with each other as the only female members of the Seven Deadly Sins as shown Merlin and Diane playfully debating of what Great Holy Knight Zaratras would give their team either a reward or scolding for their last mission before discovering the murder ten years ago and later giving Diane her Minium Tablets to allow the giantess to shrink down to human size and wear human clothes while her clothes are in repair.

Elizabeth Liones
Merlin and Elizabeth have a fairly good relationship due to Merlin saving Elizabeth father, Bartra, life and the princess shows respect toward the mage like any other Deadly Sins.

Hawk
Merlin and Hawk have a good relationship as Merlin see Hawk as a hero due to his action for saving Meliodas and believed that they should stick together due to being both 'boars.'

Trivia

 * In Arthurian legends, Merlin is the name of a legendary wizard and adviser to Arthur, the King of Camelot.
 * Merlin's old castle in the Kingdom of Liones is now used as Hendriksen's Magical Research Facility, and is overflowed with rare magical artifacts.
 * Merlin's tattoo oddly resemble Hawk.
 * Merlin uses magic to manipulate her clothes so that they stay on.
 * In Volume 5 it is revealed during a Conversation between Hawk and Meliodas that the Tattoos of each Sin were created by Merlin using a Magic Spell.

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Merlin