Undead Creature

Description
An undead creature possesses the following traits (unless otherwise noted in a creature's entry).

No Constitution score. Undead use their Charisma score in place of their Constitution score when calculating hit points, Fortitude saves, and any special ability that relies on Constitution(such [sic] as when calculation a breath weapon's DC).

Immunity to bleed, death effects, disease, paralysis, poison, sleep effects, and stunning.