TV-Series
Description
Jillian Grey, also known as Rei Jinguji in Japanese, commands the Time Police from Tama City in the 25th century. As chief, she leads the Bureau of Time and Space Investigations, an agency formed to safeguard the timeline following the Dark Lord's dispersal of the Time Shifters throughout history. Her duties encompass assigning missions to Time Detectives, enforcing rigid policies against timeline alterations, and directing responses to temporal threats.

She possesses short red hair, red eyes, and an attractive appearance, consistently wearing a distinctive white and blue uniform complemented by yellow earrings.

Professionally dedicated, Jillian Grey maintains a formal and authoritative presence. She typically communicates remotely with Time Detectives, initially criticizing Flint Hammerhead's perceived lack of professionalism before later showing him respect. Her strict adherence to protocol is evident when she reprimands Flint for reuniting a child with her mother in the past—an action normally requiring badge revocation. However, she invokes an exception to policy on Christmas Day, allowing the alteration without punishment. Her relatable side surfaces during a report, where she is seen eating lunch at her desk.

Key actions include accepting Dr. Bernard Goodman's invitation to a Christmas gathering, holding operational meetings with agent Merlock Holmes concerning Flint's missions, and managing bureau-wide crises. During a critical incident in episode 38, she reports a computer virus disabling all Time Police Ridons except Flint's, coordinating the deployment of Time Shifters from the 25th century to assist his team. She receives confirmation of Flint's success in restoring the timeline in episode 39.

Professionally, Jillian Grey interacts with Merlock Holmes solely on operational matters. She consistently rejects Dr. Goodman's romantic advances, responding to his flirtation with criticism or cold indifference. Colleagues address her using the honorific "sama," denoting high respect.

This character appears solely within the anime adaptation, replacing an elderly male chief from the original manga. Her role is absent from spin-offs, films, or OVAs.