Ref sheet done by the badass  AwfulRabbit

Dr.Levi,one of the youngest minds in the medical think tank of the 8th wonder of the world that I-was, the 8th wonder of the world,the bastard went crazy after the rest of the scientists took credit for all the research and cures he had come up with over the few years he worked with them,in return he was cast out by the cities high council,leaving him jobless and on the brink of insanity, he became consumed by rage and a lust for revenge,which he took,leading a mercenary group who would later become his generals,he raided one of the many missle control centers about the city and replaced all the explosive payloads with his own cocktail of viruses and mutations before releasing them onto the world killing and bringing the dead back to life as corpses and mutating any that were unlucky enough to survive,now in control Levi plans to rebuild the world in his vision,only question is, can he be stopped in time