Chronicles of Khaldun: Bread and Circuses
Croitus is a crocodile-man of unknown origin. Most of the gladiatorial pits think he is a gladiator, no doubt owned by someone somewhere. However, the truth of the matter is that he burrowed into an empty cell from the municipal sewers and merely fell into the routines of the gladiatorial school. A skilled necromancer, Croitus can reanimate the corpses of the dead and store their bodies in small canopic jars, apparently reducing them to their essential salts.
Surprisingly, he managed to maintain the secret of his burrow into the sewers, using it to escape the gladiator pits once the riots started.
Also, credit where credit is due. Original image source:
Petrov, Miro. “Hordes” (2013, December 17). ArtStation. Retrieved November 16, 2017, from https://www.artstation.com/artwork/nEmQ1