Janus
Roman god of beginnings, gates, transitions, time, duality, doorways, passages, and endings.
Janus
birth name of the character Magus from the video game "Chrono Trigger"
Janus Weathercock
pen name used by poisoner Thomas Griffiths Wainewright in his 1820,3 contributions to "The London Magazine"
Mr. Janus
extraterrestrial whom Sir Peter Horsley met with according to his autobiography "Sounds From Another Room"
Janus
one of the branches of the Cahill family in "The 39 Clues" book series, descended from Jane Cahill
January
character from the game "OFF"