52 Week 4: Return of the Knave from Krypton?

So in this week's issue of 52, there's a character named Devem who appears with Cassie and the rest of the new Superboy Fan (Remember, "Fan" Is Short for Fanatic) Club. I don't think it's a coincidence.

In the "History of the DCU" backup, various Legionnaires are shown in flashback to the Crisis on Infinite Earths: Dawnstar with the original group chosen, and then on the Monitor's satellite, there's Supergirl, Blok, Chameleon Boy, Sun Boy, Brainiac 5, Lightning Lad, Wildfire, Mon-el, and Saturn Girl. This chapter closes with the death of Supergirl.