• Zero Sionis a former doctor and employer of Dr. Ivo was obsessed with nano-blood formula as it was rumored to cure any disease using nano-bots to exterminate any viruses within the body. But this formula has gone untested by Ivo for good reasons. Zero was obsessed with it after the death of his mother who died from a virus, he's dream became clear to the be the hero to save everyone from death itself. But his life was shunned down further as Ivo sent him away for good and Michael another hero he worshipped turned him down as well. This would break Zero forcing him to steal the Nano-blood Formula and injected it himself seeing if it works. But this mutated his blood turning it into the Zombbot Virus.

One by one Zero takes his victims turning them all into Zombots as a gift to live forever. Each Zombot carries the virus as one single touch can spread to virus to others. Zero can even alter the virus in the bodies granting them new ablities even make them stronger. These he called themselves his "Enhanced", he leads his army to each town expanding the virus until everyone is free...from Death.