Like I said a little further down, I didn't know he did any DC work, let alone with the Atom.

That said, I HIGHLY recommend checking out Uncanny X-Force. You could describe it as "grimdark" to some extent, but it's with characters where that works, and it really does deal with the messiness and trauma that comes from the idea of superhero death squads--and it has the best take on Deadpool since Joe Kelly and has singlehandedly made even the most adamant Morrison-haters fans of Fantomex. Very good run.