B.D. commands the military forces governing Tokyo within Megazone 23's simulated reality, wielding significant authority. He oversees strategic operations and maintains control during the war against the rival Dezalg colony ship faction. His primary objective is seizing control of the city's central computer system, Bahamut, to bypass its protections, aiming to manipulate the artificial intelligence Eve. He intends to exploit her influence over the population for military conscription and advanced weapons development to gain a wartime advantage.

In Part II, B.D. actively pursues protagonist Shogo Yahagi, framing him for Tomomi Murashita's murder to justify a military manhunt. He authorizes Lieutenant Shiratori to lead the capture operation, deploying conventional forces and specialized Garland mecha units. B.D. employs tactical deception, releasing specific information designed to provoke Shogo into action, anticipating it will draw him into a confrontation. He maintains a ruthless focus, continuing the pursuit even as Dezalg forces breach the ship and attack the population. His command extends to overseeing the maiden voyage and deployment of the new battleship Airgrain FX-101 against the Dezalg, despite internal skepticism about its effectiveness and the broader war effort.

B.D.'s interactions reveal a complex relationship with power. Financier Eigen Yumekanou observes that B.D. represents a faction potentially open to collaboration with the Dezalg, though Eigen also expresses confidence that B.D. can be influenced or managed. During the climactic events, as Megazone 23 faces annihilation by the lunar defense system ADAM, B.D. confronts Shogo within Eve's chamber. He acknowledges the limitations of his leadership as the end of his era looms, ceding authority and expressing a wish for Shogo's success in ensuring humanity's future on Earth. This moment transfers hope for survival to Shogo's younger generation.