[hider=My Idea]
Here's my character concept.

Decaying Purist who took the body of a horned person and has since cyberized it.

He is a rogue beast hunter. Hunting monsters for their souls to sustain his own.

Even when his 'Decaying' status is hidden, he is shunned by purists for his cybernetic implants and attachments while out right hated by other horned people.


In his past life he was a cybernetic surgeon, and a good one at that.
Somewhere in his career he saved someone that other people didn't want saved. He also saved some people who weren't happy to become cyborgs. Either way his work lead him to deal with a few [i]unsavoury[/i] characters, and for reasons still unknown one day he vanished into a black bag and later woke up beaten and dying in a shallow muddy grave. 

A horned man was digging him out. It was unclear what happened next but he will forever remember that look deep within the eyes of that majestic creature. There was a serene acceptance, a silent wisdom, a humble forgiveness. 
Next he was looking into his own eyes as he held his own half buried lifeless body in new hands. 
 
He was unlike other decaying, something the horned one had done. He also had no interest in any other body but the one he was in now.


In his new form he was unstable and weak of strength. Soon he discovered he could harness life from other creatures and he began working his way up the food chain.
Along the way he trained in martial weapons and hunting tools. All the whilst he was also adapting to and training his new mind and body.

Back at full strength he tried to return home. He was less than welcomed. He was abused, berated, accused of lying and worse. No one would accept his story or could accept him. Back in civilisation there were few animal souls to satisfy his decaying hunger and his masquerade fell as cracks began to show.

Things became complicated, violent and very messy! Minimising injury to others he took a lot of damage to himself. His new body handled it surprisingly well but still he lost some functionality. That's when he returned to what he knew best. Cybernetics... Hidden away in a forgotten lab he worked on himself tirelessly. Time after time again. Many attempts being unsuccessful until he cracked the secret for integrating tech into a decaying horned one.


[/hider]
[@iHamartia]

Will flesh it out with more detail if you are ok with the concept.