Ebony

Ebony (nicknamed Mystic Mog) is an anthropomorphic black cat with green eyes and a skilled magic-user. Ebony likes protest, action, spells and magic, dislikes having magic used against her, physical violence and has casting spells skills. She ran a coffee bar named the Groovy Train and was best friends with a slightly senile seer called Pyjamas. She first appeared in the Knuckles the Echidna story "Roots", trying to prevent sentient trees from being cut down. After Robotnik was defeated, she took in the homeless Super Sonic in his pacifistic phase and tried to hide him from both the law and Lord Sidewinder's thugs. Despite her knowledge of what Super Sonic truly was, she was convinced that he had made a genuine change, ultimately putting her at odds with Sonic and his team. When Super Sonic began to die from a loss of Chaos Energy, Ebony helped him to recharge by bringing him to face the monstrous Perfect Chaos, confident that the power would not bring back his insane rage. When Super Sonic was transformed back into a raging demon, Sonic convinced her to rejoin the two hedgehogs once more.

Sonic the Comic Online
Ebony has also appeared in Sonic the Comic Online, the unofficially official continuation to the series; first accompanying Sonic and Porker Lewis to the bottom of the sea to recover the sunken Floating Island, and then on the island itself to purge eight thousand years of fear and pain from the memories of Tikal the Echidna.