Now for the Humans!!!
The humans once attempted to colonize Mars after a massive population explosion. While on Mars, they discovered the Bacillus and Crusnik nanomachines. When the Bacillus nanomachines were embedded in humans, they were infected with a virus that changed them into vampires who had to feed on blood to survive. The vampires—who now call themselves Methuselahs—and the humans ended up in a war against each other that resulted in Armageddon. 900 years later the surviving humans are still trying to recover from the war's devastating effects while trying to find ways to co-exist with the Methuselah despite the distrust and hatred still evident on both sides. The Vatican serves as the primary leader for the people in the on-going struggle for peace with the Methuselah, and in dealing with rogue factions from both sides that would like the war to continue. The Methuselah refer to humans as "Terrans", the Short-Lived Race.