User blog comment:Crimson Storm Mich/Future Units Preview v2/@comment-27498603-20170504023259/@comment-31903729-20170510211947

If we consider the final zone bosses of the Summoner Arc, it is highly likely he was corrupted by his powers. The Divine Machine of Bectas, The Divine Wolf of Vilanciel, and The Phoenix of Ohbanahara were all given powers by Karna Masta and given the title of "Sealed God". These "Sealed Gods" were later corrupted by their powers, or something corrupted them. If we take into consideration of what Luscius's original unit title is as "Sealed God Lucius", then it's possible he was another "Sealed God" that Karna Masta bestowed power to, The "Sealed God" of Grand Gaia.