TV-Series
Description
Awakening inside the Chernobog Sarcophagus with complete amnesia, the Doctor possesses no memory of past events or personal identity. Despite this memory loss, they immediately demonstrate exceptional strategic and tactical command abilities, leading Rhodes Island operators to victory against Reunion forces during the Chernobog crisis. Serving as Rhodes Island's key field commander and military strategist, the Doctor directs operations against threats like Reunion while also engaging in medical research on Oripathy and managing the organization's commercial partnerships.

The Doctor's physical appearance remains largely obscured by multiple layers of concealing clothing and a mask. Depictions confirm dark gray eyes, snow-white hair, and an androgynous voice. Lacking significant physical strength or combat ability, the Doctor relies entirely on tactical acumen. A critical physiological trait is complete immunity to Oripathy, demonstrated when the Doctor's unique blood cures Amiya during a severe episode.

Before amnesia, the Doctor served as the chief military commander of Babel, Rhodes Island's predecessor, under Theresa's leadership. During this period, they acted as a guardian to the orphaned Amiya, forming a parental bond. Relationships with other Babel members were complex; Scout noted the Doctor's extreme focus on victory, while Closure observed increasing behavioral changes as the conflict progressed. The Doctor sometimes showed mercy, advocating exile over execution for a confused assailant.

The Doctor's pre-amnesia history involves creating Originium alongside Priestess as part of a planetary defense strategy against cosmic Overseers. This project transformed Terra's ecosystem and inadvertently caused the Oripathy pandemic. Faced with an ethical dilemma—continuing Originium to protect Terra from Overseers at the cost of existing life, or abandoning it to spare inhabitants and risk planetary destruction—the Doctor controversially agreed to Theresis's terms. This involved Theresa's sacrifice in exchange for sparing Babel and sharing Originium knowledge, a decision later deeply regretted.

Fatal injuries sustained during the Babel incident led Kal'tsit to place the Doctor in the Sarcophagus for three years of healing. While Kal'tsit holds the Doctor responsible for Theresa's death, she honors Theresa's dying wish to protect them. During the memory-erasure process, Kal'tsit encountered an aspect of the Doctor's identity known as "Oracle" within their memories. Oracle, who identified as the personality Kal'tsit actually trusted, described being trapped in an inevitable conspiracy and watched Theresa's struggles before disappearing as Theresa dismantled the Doctor's memories.

After awakening at Rhodes Island, the Doctor gradually recovers memory fragments, including recollections of Priestess, connected to the ancient Rhodes Island landship. Key moments include saving FrostNova from rubble, listening to her story, and later comforting her as she dies following their final confrontation, subsequently accepting her into Rhodes Island posthumously. The Doctor also confronts the transformed Mephisto in Chernobog's tunnels with Kal'tsit, where the decision regarding his fate remains undisclosed. During the Chernobog-Lungmen collision crisis, the Doctor objects to Rosmontis's deployment due to her age and combat methods before proceeding with the mission.