Quimperain is tasked by Jannequinard to assist him, Leveva Byrde, and the Warrior of Light during the Astrologian job quests. Though he willingly carries out his master's orders, he initially confides his skepticism of Sharlayan astrology. This stance gradually changes as he sees first-hand how effective the art is in combat as used by Leveva and the Warrior of Light (though he admits he wouldn't trust Jannquinard's lackluster effort).
Quimperain is a Wildwood Elezen with both blue hair and blue eyes. He wears dark brown eyeshadow, and wears Ishgardian-issued Temple Knight gear, consisting of the Vigil's haubergeon, vambraces, skirt, and sollerets. In battle, he wields a hoplon carved with a skull in its steel and a steel longsword.
Quimperain is protective of those in his charge, yet is often overwhelmed either emotionally (such as by Jannequinard's incompetence, or by Leveva Byrde's headstrong nature) or physically (such as being headbutted by a small carbuncle). He often serves as the "straight man" to Jannequinard, trying to explain to him the situation as it goes over his lord's head. Quimperain is polite to both the Warrior of Light and Leveva, holding a respect for their interest in Sharlayan astrology.
Quimperiain appears in many instanced duties during the Astrologian job quests. He primarily serves a tank on behalf of the Warrior of Light, Jannequinard, and Leveva, and as such must be kept healed during combat.