Steel-bodied champion of the Narts; foremost hero of the classical-Nart heroic age. Scion by registry math (Khæmyts quartigod + Bytsenon mortal → f=0.125). The tragic-conception narrative (Bytsenon killed before birth, Khæmyts back-tumor gestation, emergence from his back fully-formed) and the Kurdalægon forge-tempering episode together produce the steel-body iconography that defines his heroic identity. Excepting one vulnerable point (varying by recension — navel, heel, or other body part), his entire body is indestructible steel. His death in the final-age destruction by divine retaliation, with his tears becoming the sacred springs of the central Caucasus, is the climactic event of the Nart cycle's Departure (the Narts' rejection of God and consequent destruction). The cognate Northwest Caucasian Pataraz (Adyghe) and Abkhaz Patraz figures preserve the shared pan-Caucasian Nart-substrate beneath the Ossetian Iranic recension. Comparative-mythological readings (Dumézil 1965; Sergent 2000) treat Batraz as a Caucasian reflex of the Indo-European "third-function" steel-warrior figure, with structural parallels to Achilles (heel-vulnerable hero) and Sigurd (forge-tempered hero of the Volsung cycle).