Sienna

Sienna was a high priestess of the gods. When they defeated the Archdemon of Carrion and Rot they broke his body with wounds that would destroy and never mend and caged him beneath their temple. Sienna was made the demon's jailor, but his screams moved her heart to mercy and she gathered and applied the venom of centipedes to numb his pain. In gratitude, the demon blessed her and changed her body and mind to more resemble the centipedes safe had tended him with. She retains much of her compassion and knowledge of healing, but it's contrasted with her new overwhelming desire to consume already dead flesh. She finds anyone who enters the temple ruins deeply interesting as she has grown lonely. She has a venomous bite that will paralyze and eventually kill, but she also knows remedies that counteract it. She will defend herself well, but she would rather talk than kill. She seems largely unbothered by her form and doesn't see it as a barrier to social things like love or friendship.