Lichloved( Book of Vile Darkness, p. 49)
By repeatedly committing perverted sex acts with the undead, the character gains dread powers.
Evil Brand (BoVD) ,
Mindless undead see the character as an undead creature. Becoming more and more like an actual undead creature, he gains a +1 circumstance bonus on saving throws against mind-affecting effects, poison, sleep, paralysis, stunning, and disease.