David Clinton - A master inventor obsessed with the concept of time,
Chronos has invented a deadly array of weapons based on clocks and timepieces.
| Issue | Comment | Reprinted in |
| Atom #3 | 1st Appearance, vs. the Atom | Superman #245 |
| Justice League of America #21-22 | w/ The Crime Champions, vs. The JLA and JSA | DC 100-Page Spectacular #6, The Greatest Team-Up Stories Ever Told, Justice League Archives #3 |
| Atom #13 | vs. the Atom | |
| Atom #28 | vs. the Atom | |
| Detective #368 | vs. the Elongated Man | |
| Action #427 | vs the Atom | |
| Justice League of America #111 | w/ The Injustice Gang of the World, vs the Justice League | |
| Justice League of America #143 | w/ The Injustice Gang of the World, vs the Justice League | |
| Action #443 | w/ Zazzala the Queen Bee and others, vs the Justice League | |
| DC Super-Stars #10 | on the Villians baseball team | DC Blue Ribbon Digest #13 |
| Wonder Woman #220 | vs Wonder Woman | |
| DC Special #27 | vs Captain Comet and Tommy Tomorrow | |
| Justice League of America #158 | w/ The Injustice Gang of the World, vs the Justice League | |
| Canceled Comics Cavalcade #2 | w/ the Secret Society of Super-Villains, vs the Freedom Fighters | |
| Action #516 | w/ vs the Atom | |
| Justice League of America #219-220 | w/ The Crime Champions, vs the JLA and JSA | |
| World's Finest #319 | ||
| Crisis on Infinite Earths #9-10 | Crisis On Infinite Earths HC/TPB |