Here's the full body reference for one of the main characters in Bullet Tracks!!! Robin is the 15th Hyper Weapon built, and pilots the Rail Buster mkI from Bullet Tracks, and the Rail Buster mkIII (Princess Model). With her upgrade, she becomes even stronger than before, but, her mental state is even more fragile, and with her dangerous mode "Red Robin", She has the potential to destroy all life on earth.