Chion (キオン Kion? ) is a country in the Neighbor World. Replica desribed it as a superpower protected by strong snowstorms and heavy layers of snow. It is one of the four nations that were near Earth along with Liberi, Leoforio, and Aftokrator, during the Large-Scale Invasion Arc. According to Replica, it had 6 Black Triggers 7 years prior to Aftokrator's attack on Border. Together with Aftokrator, it is one of the two planet-nations out of those four that use Ilgars.
- In Greek, Chion (χιών chión) means "snow", and is the name of the Greek goddess of snow.