Rutger Claussell (ルトガー・クラウゼル), also known as the Jaeger King, was the leader of the jaeger corps Zephyr and foster father of Fie. Rutger and his long-time rival Baldur Orlando of the jaeger corps Red Constellation fought each other until both lost their lives. After his death, the members of Zephyr each went their own way and Sara Valestein, who witnessed the decisive battle, and took in Fie.