23 Sonic Injustice: Gods Among Mobians » by TheSavageMan100 A Sonic/Injustice crossover. In an alternate world, Sonic the Hedgehog was a tyrant and established the One-Planet Regime that seized control of all Mobius. Only this world's Shadow the Hedgehog can stop the Regime with a little help from heroes from another reality, and a fierce clash ensues, leaving the fate of both worlds hanging in the balance.