I just ran into this Ultimates 3 #5 Alt Cover. Joe Madureira and Christian Lichtner teamed up to create this piece. It is said that Joe erased the faces from the original cover to add the robotic faces. I can see why Joe Maduriera was such a sought after talent to begin with.
Ultimates 3 #5 Cover by Joe Madureira and Christian Lichtner (deviantART)
Rampaged Reality 