Marius Gage

Marius Gage was the Terran-born First Chapter Master of the Ultramarines Legion's elite 1st Company and Equerry to Primarch Roboute Guilliman during the Great Crusade and Horus Heresy eras during the 30th and 31st Millennia. Gage would go on to become the first Chapter Master of the reorganised Ultramarines Chapter following the poisoning and subsequent internment in stasis, of Roboute Guilliman, at the hands of the Daemon Primarch Fulgrim of the Emperor's Children Traitor Legion.