Except, of course, when they aren't.

Behold: an article that argues that the Monkees - more specifically, their Monkeemen alter egos - exist in the DC universe, at least in the Kingdom Come future dystopia.

I made the spouse find our copy so I could look at the image in context. They're not just in that one image; they're standing behind Red Robin for that whole scene (clearly visible in about four frames), and the one you can't see in that image because he's too short is recognizably Davy in the one right before it.

I also have to say, Dolenz is infamously hard to draw (it's the combination of otherwise delicate features and that ridiculous chin and jaw, I think), and that Alex Ross got him perfectly recognizable there in the far background of a scene is damned impressive.