Carozzo Ronah

The mysterious commander of the Crossbone Vanguard forces. Iron Mask is actually Cecily's father Carozzo, a brilliant scientist who married into the Ronah family but was then abandoned by his wife Nadia. Hiding his shame and humiliation behind a metal mask, Carozzo turned himself into an artificially enhanced cyber-Newtype in order to help realize the ambitions of his father-in-law Meitzer Ronah. As Iron Mask, he possesses superhuman strength and mental powers, and a ruthless dedication to the Crossbone Vanguard's ideals. (Source: Gundamofficial.com)