Reo Usami (宇佐美 憐音, Usami Reo) is a member of The Valkyries who wields a bo staff.
Reo has blue hair in a style similar to Kisara Nanjō's hair.
- The name Reo means "pity, have mercy, sympathize, compassion" (憐) (re) and "sound" (音) (o).
- Reo's surname Usami means "eaves, roof, house, heaven" (宇) (u), "help, aid" (佐) (sa) and "beautiful" (美) (mi).
- History's Strongest Disciple Kenichi Official Guidebook.