Guardian Mountain is a location that appears in the Sonic the Hedgehog comic series and its spin-offs. It is a large mountain in the near vicinity of Central City and contains the G.U.N. headquarters within its interior.
- ↑ Sonic the Hedgehog: The Complete Sonic Comic Encyclopedia, pg. 138-139.
- ↑ 2.0 2.1 Sonic Universe #4, "The Ultimate Lifeform"
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