Kwok Pak-fei (played by Joel Chan) is a protagonist in Anonymous Signal.
Inspector leading the Major Crimes Unit. His team merges with Keung Hei-man's CIB to form ASIB following a cryptic AI message. He struggles with the psychological aftermath of a failed operation three years prior and ultimately kills the mastermind Lee Kin-wo in a final hand-to-hand combat. Wan Ka-lei (played by Tiffany Lau) is a protagonist in Anonymous Signal.
An undercover officer within the police force. She navigates a complex romantic relationship with Chiu Chun-long and partners with him to care for their adopted daughter, Tsz-yu, who is battling leukemia. Her personal life serves as an emotional anchor amidst the investigation. Chiu Chun-long (played by Owen Cheung) appears in Anonymous Signal.
Maintains a complex, renewed relationship with undercover officer Wan Ka-lei. Together, they care for their adopted daughter, Tsz-yu, whose leukemia diagnosis provides a crucial emotional anchor for both characters as they balance personal responsibilities with their police duties. Keung Hei-man (played by Moon Lau) appears in Anonymous Signal.
Chief Inspector of the Criminal Intelligence Bureau (CIB). She receives the initial cryptic message from the AI assistant Julie, prompting a serial murder investigation. She forms the ASIB unit alongside Kwok Pak-fei and deals with lingering psychological strain from a past failed operation. Lau Lik (played by Jazz Lam Tsz-Sin) appears in Anonymous Signal.
A member of the ASIB unit. He plays a supporting role in the investigation and meets his demise during the climactic confrontation in the ultimate game arena, sacrificing himself to protect his colleagues. Fong Chi-chiu (played by Karl Ting) appears in Anonymous Signal.
Seung Seung (played by Rosita Kwok) appears in Anonymous Signal.
Kwan Chun-yu (played by Cheung Kwok-Keung) appears in Anonymous Signal.
A corrupt police insider who collaborates with the mastermind Lee Kin-wo. He assists in orchestrating a series of coordinated crimes and manipulating both law enforcement and criminal organizations using the AI system Julie.
Anonymous Signal (2025) — Character Map & Story Timeline
Anonymous Signal (2025) interactive character relationship network and AI-powered story timeline. Explore the connections, alliances, and conflicts between characters across the narrative arc.
AI Narrative Summary
Police investigation team navigates cases guided by cryptic AI messages that alternately help and manipulate them
Character Network — 8 Characters
Kwok Pak-fei (Joel Chan) — protagonist Inspector leading the Major Crimes Unit. His team merges with Keung Hei-man's CIB to form ASIB following a cryptic AI me...
Wan Ka-lei (Tiffany Lau) — protagonist An undercover officer within the police force. She navigates a complex romantic relationship with Chiu Chun-long and par...
Chiu Chun-long (Owen Cheung) Maintains a complex, renewed relationship with undercover officer Wan Ka-lei. Together, they care for their adopted daug...
Keung Hei-man (Moon Lau) Chief Inspector of the Criminal Intelligence Bureau (CIB). She receives the initial cryptic message from the AI assistan...
Lau Lik (Jazz Lam Tsz-Sin) A member of the ASIB unit. He plays a supporting role in the investigation and meets his demise during the climactic con...
Fong Chi-chiu (Karl Ting)
Seung Seung (Rosita Kwok)
Kwan Chun-yu (Cheung Kwok-Keung) A corrupt police insider who collaborates with the mastermind Lee Kin-wo. He assists in orchestrating a series of coordi...
