<blockquote>GQ doesn't think about his mark much.
He doesn't have to. It's standard procedure for ARGUS personnel, for all kinds of reasons—not least so a mark can't be used against an agent, so they can't be set up by a false match. Touching is all it takes to light a mark, yeah, and then the jig's up; but if somebody's close enough to touch your mark, they're also close enough to shove a knife between your ribs.
So when GQ joined up, his got tattooed over. It was weird at first, looking down and seeing that thick black square on his forearm instead of the familiar faint gray pattern. It's like documents, GQ thinks sometimes, classified—blacked out. Redacted.
(Or: GQ's mark isn't visible, and he assumes the mutant killer crocodile guy doesn't have one. Then Midway City happens to them, and everything changes.)</blockquote>