|Alias||Agrestia (優騎士 Aguresutia)|
|• Professional Status•|
|Affiliation||Saint Galahadworth Academy|
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.
Unknown Eye Ability: Perceval is mentioned to have an eye ability that enables her to see the true nature of others, making it impossible for people to lie to her, however, it is unknown what it actually does.
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.
Perceval has been acquaintances with Dirk from their time in a place known as the Laboratory and refers to him as D.