When he and Sigma are on board the , he attempts to reason with his brother again, as well as giving the Flash Knight armor to Sigma, claiming that it belongs to Sigma. Sigma however, is unmoved, and demonstrated his ability to summon the Jaaku armor and brands Leo with the Seal of Destruction.
During their time on the , he attempts to convince his brother again, in addition to presenting the Flash Knight suit to Sigma, asserting that it is Sigma's property. Nevertheless, Sigma remains unresponsive, and showcases his ability to summon the Jaaku armor, subsequently marking Leo with the Seal of Destruction.