Kallos
Armor 12, Move 120', 0th Level Fighter, 6hp, Knife 1d4 or (from surprise) Garrote 1d6, Morale 8.

An extra-material thing lives inside the man who now goes by Kallos, drawn into our world by his jealousy and hatred of the fair and unmarred.  When human life is shed for Kallos in his presence, whether by himself or others, the thing draws on the blood's desires and recrafts Kallos, tweaking and nudging his features and frame with it's ever deeper understanding of beauty and longing. 

Kallos suffers from lymphatic filariasis (elephantiasis) that makes his presence almost unbearably revolting.  Though not aware of exactly what the thing inside him is and unwilling to consciously admit to himself that it even exists, he knows that killing will make everything better.  He will avoid any kind of fight, preferring to take advantage of someone when they cannot defend themselves.  If pressed into a fight in this state, his disgustingly misaligned and overgrown bulky flesh grants him AC 14 but reduces his move speed to 30'.

* The first time someone dies for Kallos his deformity goes away, leaving an average looking male in his late teens.  His AC and speed change accordingly.  With each further kill he grows more beautiful. 
* After his second kill he is so bewitchingly attractive that females must save VS magic to refuse him anything not too irregular or dangerous. 
* After his third, the same holds true for males. 
* Once blood has been shed and life ended for him five times it takes a save VS magic to refuse him anything at all.  Each additional kill imposes a cumulative one point penalty to rolls to resist him.
* At seven sacrifices he will outshine the most stunning person who will, or could, ever live.

After a dozen such sacrifices his desire to become ever more beautiful and capture the adoring praise of others will remain unabated, but will be joined by his lust to increase this new power he holds over people.  He'll swiftly descend into decadence, hubris, and a desire to see how much the world which once rejected him will sacrifice for his fancies.  Soon his court (he will of course reside in the finest place he can comfortably acquire) will be full of quadriplegics who took on voluntary amputations at his request, frequent bonfires wherein people willingly sacrifice themselves for his entertainment, husband and wife duels to the death, and all manner of blasphemies. 

Each request a character wishes to reject grants a new save, and once a save is successfully made they are immune from further requests for a day, or until Kallos grows more beautiful.

If a characters merely hears his melodious voice without seeing him consider the number of sacrifices working against them to be quartered.

If Kallos is ever killed, the entity living inside him will psychically offer the same power to whoever finished him.  If they accept they gain Kallos's power, although none of the previously made tributes affect them.  If they politely reject the offer, the being will leave our world.  If they reject the offer without tact the being will leave our world, but not before they stricken the ingrate with the lymphatic filariasis that so tortured Kallos.  Their AC increases by two accordingly, but they can no longer wear anything not tailored to them, their speed drops to a third of its value, and their lives will become full of pain and mockery.