amy_rose bat canine chao charmy_bee cheese_the_chao cream_the_rabbit dr._eggman echidna espio_the_chameleon fox hedgehog knuckles_the_echidna machine mammal master_emerald metal_sonic miles_prower mobian_(species) monotreme nameless omochao robot rouge_the_bat scourge_the_hedgehog shadow_the_hedgehog silver_the_hedgehog sonic_(series) vector_the_crocodile