Madame Loulou commands Ōni Company, a vital transport operation navigating a desolate wasteland. She projects unwavering confidence and imposing authority, demanding excellence through decisive leadership and high expectations. Her company utilizes the Hagoromo airship as a mobile base for mercenary work and cargo transport.

She maintains a strictly professional relationship with the Kotobuki Squadron, fighter pilots employed for defense against air pirates. Her direct oversight includes issuing precise mission directives and offering performance incentives, like bonuses per enemy aircraft downed during escorts. She exhibits low tolerance for failure, especially concerning cargo security, and readily replaces underperforming personnel.

Her appearance features light blonde hair and olive eyes, often rendered in a distinctive blend of 2D and 3D animation. She typically wears formal attire befitting her corporate role.

A significant professional rivalry exists between Madame Loulou and Councilor Julia of Aleshma. Their antagonism stems from conflicting business interests and political viewpoints, particularly over economic policy and resource control. Their interactions hint at a complex history with possible personal dimensions, though these remain unexplored.

Throughout her operations, she confronts corporate espionage, aerial assaults on her assets, and rival attempts to monopolize critical resources. The destruction of the Hagoromo airship in a climactic conflict marks a pivotal setback. Following this loss, her focus shifts toward pragmatic adaptation, prioritizing community rebuilding and business continuity over retaliation. This transition reveals resilience within her leadership, maintaining authority despite substantial operational losses.