Mondo was the runt of a Chua family who used his brilliance and psychopathic ways to off his family and secure a job as Chief Technologist for one of the Dominion's R&D firms. While crazy and cranky, Mondo has followed his ingenuity to Nexus, where he continues to research horrible tools of mass destruction from an orbital station around the planet.
So go figure that the space zombie is actually the more peaceful of the two. Victor is the guy responsible for the Mordesh's undead status, as an eternal life serum he devised ended up cursing his race instead. Victor's been trying to atone for his actions by slowing the contagion and looking for ways to reverse it entirely with the revelations coming out of Nexus.