Keystone Quadrant

Key Stone Quadrant is a star system. On one of the planets in this star system Rocket Raccoon was cybernetically enhanced from a regular Earth Raccoon.

History
When Rhomann Dey was discussing the prisoner Rocket Raccoon with a fellow officer, Saal, Halfworld appeared on Rocket's historical record. Halfworld is a planet n the Keystone Quadrant star system.