There is a new trailer for the remainder of Young Justice’s second season. Fair warning of significant spoilers if you haven’t seen the episode “Depths” yet…
The villains I could identify include Deathstroke, Despero, Mongul, the return of the Red Volcano, and that toy soldier could indicate the Toyman. I’m not entirely sure, but that thing Aquagirl destroys could be the Brother Eye satellite.
We see Doctor Fate and Captain Marvel having more to do.
Aquagirl makes an appearance so her death may be explained. There is also the new wave of teen heroes that have been hinted at in previous episodes. Those shown in this trailer are a variation on the Apace Chief, Static, and teleporting person. A new Guardian hints that Mal Duncan may be using one of his costumed identities from the comics.
There is even someone that looks like a possible Green Beetle (?).