- Why Jackal chose the name Ratman. Rats are used as test subjects and they are using Shuto as a test subject for their APPEND GEAR.
- Is Shuto Katsuragibein being called "Ratman" A refrence to Tsutomu Miyazaki(The Otaku Murderer)? As he too was an Otaku with an altar Ego called "Ratman".
Fridge / Rat Man