Doctor Matthew Walters was the head scientist at the NERG ‘bug farm’ in the CAN’s Copernicus Station facility. Tasked with engineering organisms that could thrive in the harsh Martian climate, Doctor Walters ended up splicing human and insect DNA to create a family of monsters, monsters which truly thrived in the post-rift environment. His monsters overran Copernicus and spilled out into the Splinterzone, but Walters himself had died and rotted long before the party came to Mars.