Calendar Man

Calendar Man
Calendar Man in Batman: The Long Halloween.
Art by Tim Sale
Publication information
PublisherDC Comics
First appearanceDetective Comics #259 (September 1958)
Created by
In-story information
Alter egoJulian Gregory Day
SpeciesHuman
Team affiliations
  • The Misfits
  • Time Foes
Notable aliasesCalendar Killer
Abilities
  • Inventor of gadgets and machines
  • Ages and rejuvenates according to season

The Calendar Man (Julian Gregory Day) is a supervillain appearing in American comic books published by DC Comics, as an enemy of the superhero Batman, belonging to the collective of adversaries that make up Batman's rogues gallery. Calendar Man is known for committing crimes that correspond with holidays and significant dates. He often wears costumes to correlate with the date of the designated crime. His name is a reference to the Julian and Gregorian calendars. In his debut, the character was presented as a joke villain, but in later years, writers developed Calendar Man as a dark, disturbed criminal who toys with Batman.

The character made his live-action debut as a cameo in the DC Extended Universe film The Suicide Squad (2021), portrayed by Sean Gunn.