Sabu serves as a crew member aboard the space pirate vessel commanded by Mito. His name, Sukesaburō (commonly abbreviated as Suke-san), directly references the devoted follower of Mitsukuni from the classic Japanese series *Mito Kōmon*, mirroring the naming convention used for his fellow crew member Shin (Kakunoshin/Kaku-san). Sabu participates alongside Mito's crew in their missions and conflicts, including the pivotal battle against Hikari, who asserts herself as the true universal queen. His actions consistently support the crew's objective of defending Queen Aoi and opposing threats to the galactic throne. Sabu maintains his role as a loyal subordinate throughout these events, operating within the crew's group dynamic without receiving individual narrative focus or development.