Deathless
Though somewhat related conceptually to undead, the Deathless are actually a separate type of creature. Powered by positive energy, and immune to spells that target undead specifically, they are theorized to be creatures that ORB (or potentially another god) has sent back with a specific purpose and goal to accomplish.
There are not enough of them for the Church to have an official position on them just yet, though it probably would be very skeptical.
Character Notes
Not available as a starting character race. See the Book of Exalted Deeds for more information.