|Alias||Agrestia (優騎士 Aguresutia)|
|• Professional Status•|
|Affiliation|| Saint Galahadworth Academy|
Golden Bough Alliance
Student Council Secretary
|Weapon|| Goat Amalthea|
|• Personal Status•|
|Light Novel||Asterisk Volume 7|
Perceval is a described to be a woman wearing the Saint Galahadworth male uniform.
Orga Lux: Perceval wields the Orga Lux Goat Amalthea (贖罪の錐角). Goat Amalthea is able to instantaneously knock anyone unconscious that is swallowed in its blast. Ernest theorizes that the reason Goat Amalthea chose Perceval was because of her eye ability and her eternal guilt, adding that as it was much more sensitive than Lei-Glems, it couldn't be deceived concerning its cost unlike the latter.
Eye Ability: Perceval is able to see various truths, making it impossible for people to hide from her or try to feint against her.
Lux: Perceval wields a normal Pistol Lux that she uses to warn people or break up fights. She has a habit of firing a shot in the air at first warning.
Genestellar (星脈世代): As a Genestellar, Perceval has enhanced physical ability and an aura known as prana.
Variant (ヴァリアント): Perceval used six mass produced AR-D shaped puppets during her battle against Kirin. Unlike the original, they don't have a will, though they are able to use a weaker version of AR-D's absolute barrier and wield a copy of its hammer. In case of emergency, they can be made to explode.
Perceval has been acquaintances with Dirk from their time in a place known as the Laboratory and refers to him as D.