​Kostchtchie, The Deathless, Demon Prince of Wrath

Alignment: Chaotic Evil
Domains: Chaos, Evil, Destruction, Strength, War
Symbol: A twisted Toten rune (Death Rune)
Garb: Furs, necklaces and body piercings of animal claws and teeth
Favored Weapon: Warhammer
Form of Worship and Holidays: Midwinter and nights of the new moon in winter are nights of sacrifice where enemies are eviscerated and left in the snow to die or be devoured by wolves. Rituals involve drumming, chanting, and battle until blood is drawn and sometimes to the death.
Typical Worshippers: Frost giants, aberrant giants, ogres, berserkers, deformed creatures
The mighty Kostchtchie is a yellow-skinned giant, hairless save for bushy eyebrows, with arms of knotted muscle and legs twisted and bent. Despite his deformity he is able to move about very quickly with a hobbling gait. Kostchtchie is called the Deathless because he was originally a mortal barbarian chieftain who angered Baba Yaga. To punish him, the Old Crone stole his soul and hid it away. As a result he could not die except by violence and his body became twisted and gigantic, turning into a massive demonic being. He became the patron of frost giants and creatures twisted by deformity who were filled with as much vile hatred and rage as him, in particular athachs and aberrant giants. He has sworn to avenge himself on Baba Yaga ever since and has even managed to alienate or make enemies of almost every other demon lord as well. Kostchtchie is a being of pure wrath who lives only to kill and destroy. His symbol is an ancient rune for death but is twisted to represent his own broken body. Even with his disfiguring condition, he is amazingly strong, and wields a great warhammer called Gorynya that most giants couldn’t even lift much less swing in battle ​

Divine Classification

Demon Lord