First Lieutenant (Chuui) Ligier Leroy serves as a pilot on the Space Battleship Tiramisu. She is the daughter of the ship's commander, Venturi Leroy. French by nationality, Ligier possesses distinctive pink hair and blue eyes, stands 168 cm tall, and is noted for her outstanding style and excellent body.

A slightly selfish personality, stemming from her upbringing under her doting father, characterizes her. She occasionally adopts an attitude toward fellow pilot Subaru Ichinose reminiscent of an older sister observing a younger sibling. As a pilot, she specializes in close-quarters combat and maintains a stern, no-nonsense demeanor during duty. Despite this seriousness, she demonstrates strong loyalty to her comrades and a consistent willingness to protect them.

Her approach frequently clashes with Subaru's more relaxed attitude, though their working relationship remains functional. Ligier also acts as a mentor figure to other pilots, commanding respect from her peers. A notable episode reveals a surprising contrast to her serious military persona: her mecha cockpit filled with stuffed animals and lace, where Subaru is forced to fight.