Undead

Ghosts When there is no body
Zombies Most people, body not possessed by anything
Vampires Manipulative people, body possessed by an evil soul
Werewolves Savage people, body possessed by a beastial Icconu spirit
Reavers People hell bent on a mission, body possessed by an angelic spirit of vengeance
Shape Shifters Intelligent people, body possessed by a fiendish spirit of pure sin

Undead

Left Behind: Your guide to the Rapture. EugeneGM