Arma was born after the war of the Crests with rare attributes. Being a relatively young demon with thriving vigor and blessed with strong wings and innate magic, he caught the eye of Phalanx, who added him as aide to his mercenary troops. Arma achieved exceptional success in a short period of time, and was soon honored by Phalanx with the position of general and regarded as one of the strongest demons in the Demon Realm, being often compared with the red demon Firebrand.