Calendar Man
Personal information
Real nameJulian Gregory Day
OccupationProfessional criminal
Based inGotham City
Physical description
Eye colorBlue
Hair colorNone (formerly brown)
Height5 ft 9 in
Weight215 lbs
Real-world information
AppearancesArkham Asylum (mentioned only)
Arkham City
Arkham Origins
Arkham Knight
Voice actorMaurice LaMarche

Having a bizarre fixation on the calendar, Julian Day became Calendar Man, a serial killer who timed and thematically tied his murders and other crimes to certain holidays throughout the year. Much like the Riddler, he often left clues through which he could be caught.

Gotham City's hopes for a day off are often overshadowed by the knowledge that any major holiday is likely to be made dangerous by Calendar Man's actions.