In addition to the previous 3, Joe also did images for the Drone Fighter and War Hive, ships used by the Cataclysm Swarm:
And this is an image of members of a race known as The Thal. They are descended from Neanderthals who were abducted from Earth by another race that has since died out. They have colonized a few systems, and are expanding into the galaxy. Their race has been thrust into the spotlight because one of their kind was chosen to bear The Watchlight (a force that empowers individuals much like the power rings of the various Lantern Corps in DC):
And speaking of that Thal empowered by the Watchlight, here she is: