Shinma Oki serves as a member of the Lightning Wind Corps aboard the Great Yamato Zero in 3199. This specialized combat unit operates within the vessel's military structure, defending the Milky Way Galaxy (designated the A-Galaxy) against invading Seven Star Clan forces. His role involves coordinated tactical operations. Merchandising associated with the project depicted a character identified as Oki in a disapproving pose on various items, including trinkets and lighters.