DC Comics Universe and Adventures Of The Super Sons #2 Spoilers follows.
A Rip-Roaring, Topsy-Turvy, Thrill Ride With The Gang (Injustice Gang / Legion Of Doom Jr.) !
Turns out the Gang are actually green aliens that can look like Jr. / kid dopplegangers of the Legion of Doom. They needed a hypercube to make their plans come to fruition; a cube that Superboy had / has. Interestingly, the alien that would become Joker Jr. seems noble in his original form.
The modern day, the Gang has beaten up Superboy and Robin is still trapped and imprisoned.
The Joker Jr. drags Superboy to Robin and frees the latter asking for their help in stopping the Gang.
Despite being beaten up by Robin, Joker Jr. gives him the synthetic gold kryptonite created by the Gang…
…its radiation still has an impact on Superboy. As the Gang realize Joker Jr. betrayed them, they walk in a gold krytonite impacted Superboy as…
…Superboy Blue and Superboy Red…
…based on the classic Superman Blue and Superman Red…
…storylines of the past.