Antagonist posing as Cassie's mentor and time traveler. Revealed to be an Editor sent to eliminate the trio at their artistic peak. Incapacitates Cassie, offers to make them legends in exchange for the letter, and appears to massacre the pub when refused. Her actions trigger the final timeline reset.
Initially presented as a professional mentorship, later exposed as a deceptive facade.
Millie acts as a future operative tasked with eliminating Ray before his creative peak.
Millie acts as a future operative tasked with eliminating Pete before his creative peak.
Millie acts as a future operative tasked with eliminating Toby before his creative peak.