Claudia Peer, born on Side 4 Moore, forged close childhood bonds with Io Fleming and Cornelius KaKa. The trio regularly competed in mobile worker air races within the colony, where Claudia served as their tactician. Her strategic mind, paired with Io's piloting, secured consistent victories. Claudia's upper-class background later fueled tensions during her military service, fostering perceptions that her status influenced her advancement. When Zeon forces destroyed Moore colony during the One Year War (UC 0079) and Io's father Otto Fleming committed suicide, Claudia enlisted in the Earth Federation Forces Military Academy alongside Io and Graham. They joined the Moore Brotherhood, a unit of survivors dedicated to fighting Zeon. Claudia rose to Lieutenant Commander and became acting captain of the Beehive, the Brotherhood's modified Columbus-class mothership, following her predecessor's death. Commanding the Beehive proved arduous. Executive officer Graham constantly criticized Claudia, resenting her privilege and questioning her qualifications. He blamed her for failures while dismissing successes. The stress of command and this hostility drove Claudia to depend on depressant drugs. Io Fleming, her romantic partner, discovered her addiction and intervened during a near-fatal overdose. During the protracted Battle of Thunderbolt Sector—a debris field vital to Zeon supply lines—Claudia led Moore Brotherhood forces against Zeon's Living Dead Division. The experimental MS-06R Psycho Zaku, piloted by ace Daryl Lorenz, inflicted catastrophic damage on the Beehive. With the ship crippled, Claudia ordered a full evacuation. Graham refused, citing honor. When Claudia tried to remove him physically, he shot her through the chest, blaming her and Moore's leadership for his family's and fleet's deaths. The Beehive exploded, leaving Io Fleming and Cornelius KaKa to presume Claudia dead. A memorial grave was later erected for her in the rebuilt Moore. Unknown to her comrades, Claudia survived the Beehive's destruction. A South Seas Alliance casualty vessel recovered her. This humanitarian and religious group, led by former Newtype Levan Fu, employed Levan's potent psychic abilities to suppress Claudia's traumatic memories and guilt, effectively brainwashing her into their ranks. By eight months post-war, Claudia commanded within the South Seas Alliance, now a rogue faction seeking independence from the Earth Federation. Freed from her past burdens by Levan's mental influence, she exhibited significantly enhanced tactical and leadership abilities. The Alliance utilized recovered Reuse Psycho Device technology and Zeon scientist J.J. Sexton to develop Psycho Zaku units for their separatist ambitions. Claudia's personality shifted markedly. Initially combining strategic aptitude with emotional vulnerability under command pressure, her wartime leadership was defined by anxiety, guilt, and substance dependence. Her brainwashing within the South Seas Alliance produced a colder, more confident command presence devoid of previous struggles, though this transformation sacrificed her free will and personal agency. Key relationships included a complex romance with Io Fleming, an enduring friendship with engineer Cornelius KaKa, and an antagonistic dynamic with Graham, whose resentment stemmed from believing Moore's elite caused his family's death.