User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-5159732-20120806212401/@comment-1038387-20120813085621

The Black Beetle article on DC wiki is wholly unreliable - it's a mess. I've asked the original writer multiple times what he meant, and told him to clean it up. I only got gibberish answers that made no sense.

But here's how I understand the comics: Black Beetle is not Jaime from the future, but his old friend Hector, who's still cross over the death of his sister Nadia. In the fall-out of the second Reach war, he got his hands on a scarab. He later started the Time Stealers, I'm no sure if he was the initiator or he was recruited into it.

But yeah, this is all moot because it's not Black Beetle. It's either a random Reach agent, or Dawur, or "Big Beetle".