Source: comicvine.gamespot.com

9. Chronos

Chronos started off as another gimmick-y villain. David Clinton used timepiece-themed weapons and death traps to steal, before The Atom kicked his butt a whole bunch and sent him to jail. David eventually developed a means of time manipulation, which should have been an obvious step from the beginning, but it took him WAY too long to come up with it.

While in prison, he was dispatched on a Suicide Squad mission to stop a crazed racist vigilante named (and this is true) William Hell. Chronos was essential in defeating Hell, due mainly to his limited time dilation ability. Of course, Chronos is one of those characters who was barely in the Squad for any length of time, but his very nature as a forgettable villain used as a kickass covert agent makes him the typical Suicide Squad success story.

Plus he fought a guy named WILLIAM HELL. THAT IS AMAZING. WHY ISN'T WILLIAM HELL GUEST STARRING IN BATMAN V. SUPERMAN?! I would one hundred percent rather see a William Hell guest appearance than a Doomsday one. No part of that sentence is a joke.

Wait, I was supposed to be talking about Chronos, wasn't I? Chronos is cool. There.