Thanatology is the study of death and the emotions surrounding it. Confusing this with technology has amazing outcomes, including undead summoning. Although, Robotguy39 is indeed not the only person with such knowledge. In fact, he stole it. Of Dr. Zomboss, a zombie. Amazingly he stole his notes, and ran his own tests. Eventually, he summoned his own fleshless slave, whom he named Carl. His knowledge was high, slightly less than Robotguy's. Robotguy eventually created a flesh summoning armor, only to be fused with it in his accident.