Yuuki Terumi, often operating under the alias Hazama, is a major antagonist in the BlazBlue series. He is a cunning and sadistic villain responsible for much of the conflict throughout the story. Terumi is a master manipulator, orchestrating events from the shadows and causing suffering for personal amusement. As a former member of the Six Heroes, he betrayed his comrades and played a central role in unleashing chaos. His role is pivotal as both an adversary and the driving force behind many of the series’ pivotal events.