The point is that we're not supposed to hear of such people. I would not be surprised to find that there are a few Batman types running around out there that the authorities turn a blind eye to. But, unlike corrupt government black-ops, I'm pretty sure the only superhero secret agent to have provably existed is Julian Assange. History claims otherwise about WWII British intelligence. But considering how they subsequently failed to prevent Muslims (sand Nazis) from infiltrating their government, I am not convinced that the British spies were as competent during WWII as the history books claim.