I know that he was in the new 52 (I haven't read most of the stories but he had something to do with The Phantom Stranger. Whaaaaaat?), but has he been seen or acknowledged since the new 52? I like the character from what I read of the Denny O'Neill run, and I have been on a mission for a loooong time to get as many issues of that run as possible (In particular there was an issue with The Riddler that I am dying to get and just can't find ANYWHERE!). He seems like he's a very interesting character.
Also, have we seen either Despero, The Key or Doctor Destiny since Rebirth? If so, when? Thanks.