Gawain

is one of the Four Knights of the Apocalypse.

Appearance
Gawain's true appearance is unknown as they have only been seen wearing a full suit of tall, white armor with gold trimming and a face-concealing helmet.

She is soon revealed to be a rather tall, well-built black-haired, short-haired young woman much taller than Isolde.

Personality
Gawain is secretive as she didn't remove her armor for the entire time that Tristan escorted her back to Liones and after Tristan had left her inside the castle alone, she immediately fled and ditched her armor since nobody knew what she looked like underneath and allowed her to blend in with everyone else.

From first appearance, Gawaine is noted as being a rather kind person, as she tried consoling Isolde, who ran from Tristan out of embarrassment. It is shown that she prefers women or men, which was seen during the same conversation with Isolde, having no issue running her hands down towards her waist, then attempting to discuss love with her.

History
At some point during Percival and his team's journey to the Kingdom of Liones, Tristan had found Gawain and discovered them as the last member of the Four Knights of the Apocalypse. He escorted them back to the castle where, for unknown reasons, Gawain fled the scene after Tristan left to take care of an incident within the city.

At some point after this, Gawain ditched their armor since nobody knew what they looked like underneath, allowing them to blend in with the citizens of Liones wandering the streets.

Abilities/Equipment
Gawain is described to have "golden magic". It is revealed to be Sunshine, the former Grace of Mael and Escanor as she proclaims herself as the "Master of The Sun".

Arthur Pendragon
Gawain is a blood relative of King Arthur.

Trivia

 * Gawain is named after the character of from Arthurian legends.