ตัวตน

The heroic aspect not normally summoned due to the corrupted aspect having more notoriety as "Bluebeard" (青髭, Ao hige). 

รูปร่าง

A somewhat skinny lady-killer. At the times when his tension was still low.[2]

A knight in his prime, at least when compared to his other self. His eyes are pitch black and his black hair is yet to show signs of aging. It is long enough to warrant being tied up into a small bun at its end, with large portions of it falling on either side of his face. Plain-looking and serious.

As a knight and as a Servant, he wears the white silver armor he carried during the One-Hundred Year War, as evident by his appearance in the Singularity of Orleans. It appears to be teal in some patches. In addition, it has a piece of cloth attached to the crotch-piece of the set. He seems to wear black and white underclothes beneath the armor. Finally, the armor is adorned with crosses in the chest, side of the legs, and the singular shoulder piece in the right side.

In his 2nd Ascension, his white underclothes were replaced by blue ones, which extend into a front and back piece of cloth. His armor remains the overall shape, but is radically different in the details, as most of its pieces now hold a pattern engraved that resembles the fangs of an unknown, perhaps otherworldly beast. The cloth in front of his crotch is now stained in blood. In addition, he holds his sword, a white, double-edged bladed weapon with the same fang-like pattern in its hilt as a decoration, in his right hand.

In his 3rd Ascension, Gilles de Rais appears the be the closest to his Caster self while still a Saber. Many pieces of his armor were removed to reveal the underclothes, which appear to be a medical coat of sorts, with three black sashes tied around his chest, waist and hips to hold the pieces of his armor that remain to his body. The blood-stained cloth has disappeared, but now in his left hand, he holds the Noble Phantasm of his Caster self, given to him by a dear friend.

Throughout his Ascensions, it's made clear that Saber edges closer and closer to his downfall..

Noble Phantasms (พลังขั้นสุดยอดหรือท่าไม้ตายของวีรชนคนนั้น) 

Saber's Noble Phantasm is Saint War Order. He also owns Prelati's Spellbook, but if he uses it he will automatically transform into his Caster version.He is also able to use Jeanne's Noble Phantasm Luminosité Eternelle if he somehow manages to obtain her flag.

Prelati's Inspiration 

Prelati's Inspiration (プレラーティの激励, Purerāti no Gekirei?) is a skill that Gilles receives encouragement from Prelati. It takes the form of STR reinforcement via magecraft but as a cost, his memories of his life after Jeanne's death becomes more and more distinct.