Siegfried is a member of the Hero Faction. Alongside Arthur Pendragon, he is known as one of the top two swordsmen of the Khaos Brigade.
Siegfried is a biological brother to Freed Sellzen, as the two were artificially created from the genes of the original Sigurd. Siegfried was considered the only success of the mass project, as he is able to wield the demonic sword Gram.
Siegfried also wields the Sacred Gear Twice Critical, although his is a sub-species that allows him to double his power and creates a dragon arm on his back.
Weapons: Gram, Balmung, Nothung, Tyrfing, and Dáinsleif.
