Duo  

Octo's replacement, known as Duo (Two), stands in contrast to Novem. In terms of physical strength, Duo is the most powerful among the Gilgamesh in both forms, as seen in his God Beast form's size and shape. Despite being harsh, angry, and cruel, Duo relies more on his strength than Dynamis when fighting Blattaria. He can be identified by his hazel-colored eyes that resemble gold and wildly sticking up white hair.