Sudarban belongs to a space yakuza syndicate encountered by Romi and Com on their interstellar voyage. This character possesses ties to Makimura, an earthbound astronaut, though the specifics of their connection remain undefined. Sudarban's presence emerges during Romi and Com's travels through space, a journey marked by encounters with unknown life and human strife. The space yakuza, including Sudarban, constitute one of the challenges faced by the protagonists in the cosmic expanse, presenting obstacles on their path toward Earth.