The H.I.V.E. and Deathstroke. The H.I.V.E. are a criminal spy agency and they along with Deathstroke of course played a very important role in the Judas Contract.
Could it be possible that Bendis has somehow overlooked this organisation?
At first I thought that Leviathan was Deathstroke and was somehow connected to the HIVE because he or she are wearing a similar hood and I see hexagon shapes in the face mask but on the cover of issue # 2 it's obvious that Leviathan is someone that's younger with dark hair.