Through the years a very fragile Alliance formed. The Alliance always on the verge of falling apart between the Vampires, WereWolfs, and Mages.
1. Vampires need blood, and they prefer Human blood. But, in hopes to maintain there supply they must protect the humans. If they mass slaughter all humans, No more food. Also it would provoke a battle with the others. Must of their blood comes from willing Donors who give for money or think they are donating for a great Cause.
2. Mages are eccentrics. Notoriously lazy and self centered. Mages have several Laws that Govern their own Ranks and Joined the Alliance seeing very little to Loose and the World to Gain.
3. WereWolfs are the elf proclaimed spiritual defenders of the world. WereWolfs are capable of seeing spiritual entities attacking the world daily. To form the Alliance would give them one less enemy and mighty Allies! WereWolfs do not spread there burdens to others. They are born into there Roles and Gain powers after reaching Maturity. it tends to skip Generations. Usually 4 to 5 but some are not able to trace back.
