Undead

"'And as for you, River, there will be a day when you will flow with blood more than water. And he who is dead will not be mourned as much as he who is alive.'"

Information
The Undead perk confers a number of bonuses to characters who possess it. They are unable to set off traditional traps in the dungeon and may confer a fear effect when facing the meek or intelligent.

It also gives a character a complicated relationship with fire.

Raw fire damage itself is reduced by 50%, however the undead are guaranteed to be left with a flame status effect that lasts almost indefinitely.