Ix Gremory is an antagonist in the story DxD: Fragments of Black and Silver. He is the son of Milicas Gremory and an unnamed High-class Devil mother who died giving birth to him. As the only child left of the Gremory family, he is the unofficial head of the house of Gremory. Ix is also possesses the Sacred Gears Blade Blacksmith and Sword Birth.