Garrison Tokida acts as Banjō Haran's trusted butler and aide from his employer's luxurious Earth-based mansion. He joins Banjō's core team, alongside Reika Sanjō, Beautiful "Beauty" Tachibana, and the orphaned boy Toppo, in the battle against the Meganoid threat, providing crucial logistical and tactical support. Garrison maintains this role throughout the conflict, which concludes on Mars. He subsequently appears in the final scenes back at the mansion. Following the resolution, Garrison sees to the estate's closure before boarding a bus bound for an unspecified destination, marking the end of his direct involvement.