Susumu Yamazaki serves as an engineer aboard the space battleship Yamato, initially assisting Chief Engineer Hikozaemon Tokugawa. Born September 9, 2153, in Kumamoto Prefecture, he holds the rank of Lieutenant Junior Grade, overseeing damage control during combat and supporting Tokugawa in maintaining critical shipboard systems. Their bond of mutual trust culminates in Yamazaki succeeding Tokugawa as chief engineer.

During the 2202 Yamato Revolt, Yamazaki emerges as a pivotal figure in the crew’s mutiny against United Nations Cosmo Force directives. After saboteurs disable the ship’s underground dock to thwart its launch, he spearheads a team to manually activate flooding controls, enabling Yamato’s escape. This decisive action results in his team’s capture by UNCF forces, though the ship departs successfully.

Yamazaki coordinates engineering teams during crises, managing hull breaches and executing urgent system repairs. His technical expertise and leadership are proven in high-stakes scenarios, from combat engagements to covert operations. His consistent presence in critical engineering roles underscores his indispensable contribution to the Yamato’s survival and operational readiness.