Apple Bieber functions as the Seven-O special criminal investigation unit’s technology specialist, tasked with designing, building, and maintaining the team’s covert operational gear. He rigorously enforces the use of the honorific “Doctor,” a demand routinely overlooked by colleagues—save for Kirill Vrubel, who scrupulously complies. His role encompasses overseeing surveillance networks and dissecting investigative data, including tracing targets across interconnected camera systems. Though vital to mission success, his work unfolds largely offsite, removed from frontline fieldwork. Team dynamics emphasize a recurring tension: casual disregard for his professional title contrasts with Kirill’s unwavering formality, framing their interactions within a subtle yet persistent professional friction.