Character Design Challenge - Aztec Warrior - Quin, the Quauhtin Army demon

Here's my submission for September's Character Design Challenge!
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He is Quin, the Quauhtin Army demon.
Undisciplined warrior, endowed with a great natural talent for battle and a predilection for blood and violence.
In battle, Quin goes into a trance and his body is possessed by the god of war Tonatiuh: in fact, he has to his credit numerous battles of which he was the only survivor, after slaughtering enemies and allies without distinction.