Liselotte W. Dorssia is the princess of the Dorssia Military Pact Federation and holds a high position in the royal line of succession. She is a young woman with pink hair, often styled into pigtails or buns, and red eyes. Her background is marked by tragedy: after a political coup, her family was punished, and she was kept alive but imprisoned due to her royal status. As a child, she saved the life of a boy named L-elf, an act that deeply influenced both their futures. She carries a compassionate and gentle nature, described as sweet and lovable by those who know her. Even while imprisoned and facing hardship, she shows kindness and a willingness to sacrifice for the well-being of others. Her core motivation is a desire for peace and a future where humans and the mysterious race known as the Magius can coexist. She becomes a central figure in the conflict between these groups, serving as a key informant about the Magius and their history. In the story, she is a supporting character who appears in both seasons. Her presence drives the actions of L-elf, who carries a photograph of her and works toward revolution partly in the hope of freeing her. When L-elf attempts to rescue her on Earth, she dies during the escape. After her death, L-elf learns that she was a Magius herself, which deepens his resolve to pursue a world of coexistence. Her revelation and death are pivotal moments that shape the direction of the final conflict and the characters' development. She does not pilot a Valvrave or exhibit combat abilities, but as a Magius, she is part of a non-human race that possesses Runes and can possess other lifeforms. Her notable ability lies in her knowledge of the Magius and her role as a symbol of hope and peace that motivates others long after her death.