Agron led the construction of the Desert cities floating utopia. He is a technological genius and also was leading the production of the large transporters.
Once they were built he 'stole' the technology for himself, using it to literally get away with murder. He has outcast himself to the badlands and the Elder Truscans weren't able to take his marks from him, so instead they have dimmed to a black and no longer glow.
He lost his arms at some point in his life and had to replace them with mechanical ones. He has scars littering his body, and rare double fangs.
The author is yet to answer any questions about this character.