Sleeper (comics)
Sleeper was a comic book series written by Ed Brubaker with art by Sean Phillips, published by DC Comics under their Wildstorm imprint. The series consisted of two twelve-issue limited series and the events of the first "season" served as a catalyst for the Coup D'Etat line-wide crossover.
Sleeper was set in the Wildstorm Universe and concerned the travails of Holden Carver, a covert operative who has been placed undercover in a villainous organisation led by TAO, a WildC.A.T.s villain from Alan Moore's run. It was a spin-off of Point Blank, a mini-series about Grifter from Wildcats and John Lynch from Gen¹³ that was also written by Ed Brubaker.
Read more about Sleeper (comics): Plot, Collected Editions, Film