Rawr! .. Why does he have a mechanical right wing?

birth defect ^^ it won't become apparant for maybe another year, when his right wing will seem a little weaker than the left, and will start looking stunted... By the time darrius leaves toddlerhood, the wing will have been amputated. Between then and just before teenage, he'll have designed and constructed a wing made of light steel framework and cloth, powered by pneumatic actuators and clockwork. His elemental affinity to wind and water will allow him to control it with more articulation, but in a pinch he can lock it extended and glide, using his intact other wing.