Green Gate

The Green gate is a planet that appears in Sonic X. It is the home planet of Cosmo's species.

History
Similar to Cascade, Green Gate was once a thriving planet populated by a race of living plants, but was reduced to ravage by war and ultimately the removal of the Planet Egg.

In the episode, "Eye Spy", Sonic and his friends visit the planet and find the capital city before hearing a message from Earthia explaining the fate of the planet.