Mir Lotus is a lieutenant and a member of the crew aboard the spaceship Bilkis in the 23rd-century world of Geneshaft. She is widely known by the nickname Ice Queen, a reflection of her cold, distant demeanor. Physically, she has waist-length blonde hair and green eyes. Her genetic code is considered perfect, having been engineered to grant her superior abilities in combat, strength, speed, endurance, and marksmanship. This perfection is central to her identity, and she takes great pride in her DNA, often displaying a confident, egotistical, and snobbish attitude that makes her look down on those she considers genetically inferior, especially the protagonist Mika Seido, who possesses an unmodified white gene type.

Mir Lotus was subjected to genetic engineering as a child. This process gave her extraordinary physical capabilities but also marked her as different, making her an outcast in a society that already judges people by their genetic quality. Her emotional distance and the wall she builds around herself are direct results of that isolation. She is fiercely loyal to the mission of the Bilkis and to the Shaft project, a secret undertaking to use alien-derived technology. Her motivation for supporting the project is rooted in the belief that genetically modified humans like herself should not have to face the discrimination she experienced. She wants to create a future where engineered individuals are accepted, and she dedicates herself to that cause with a stoic, no-nonsense approach.

Within the story, Mir Lotus serves as a skilled soldier and pilot, often at odds with Mika Seido, whose emotional nature and ethical questions challenge the rigid system Lotus defends. Their conflicts highlight the tension between genetic perfection and human emotion. Despite her cold exterior, she is capable of loyalty to her fellow crew members, though she remains distant and rarely expresses warmth. Her key relationships include her friendship with the calculating Remmy Levistrauss and her strained interactions with Mika. As the series progresses, Lotus begins to question her own identity and the values of the society that created her. She confronts the contradictions between her engineered superiority and the loneliness it has caused, leading to significant personal development. Her notable abilities include superhuman combat skills, precision with firearms, and peak physical performance, all of which make her a formidable opponent in battle.