"DC One Million" is a comic book crossover storyline which ran through an eponymous weekly miniseries and through special issues of almost all of the "DCU" titles published by DC Comics in November 1998. It featured a vision of the DC Universe in the 853rd century, chosen because that is the century in which DC would have published issue #1,000,000 of Action Comics if it had maintained a regular monthly publishing schedule. The miniseries was written by Grant Morrison and drawn by Val Semeiks.

Chronos is the name of several supervillains appearing in American comic books published by DC Comics. These characters take their name from the Greek personification of time and have the ability to time travel. He is the archenemy of the Atom.