Sergent

Sergent is a evil feral motherfucker who absolutely loves the smell of burning and the sound of screams. 

Favorite color is the blood of his victims.

Was created by a government independent mercenary group, who were illegally trying to create a more vicious Leobuck to send out on missions. When growing up his handlers put him through intense training which would end with him overworked in extreme pain. 

After a year or so Sergent got used to the harsh training, and actually started to like it. Eventually he started to get bored of training causing him to try and start fights with others. The mercenary group began to feel uneasy about the behavior. The treatment of him got worse, they started starving him to get him to comply easier. 

After months of starving from only being given meager meals, he started to attack anyone in his range. Some of Sergeant's handlers had to be put out of commission due to, to many chunks of flesh and fingers being bitten off. 

It was during the night where security was lax that Sergeant enacted his plan of escape. Breaking out of his cell with he started setting, everything he could, on fire. Once the  mercenaries and other leobucks working there, started to attack them he struck back as viciously as he could. 

Once he killed everyone he could find he started gorging on the corpses of all the human and Leobucks around him. 

Escaping from the now burning hideout, he heads into the forest to continue his hunt for victims.