This character exists primarily within the Sonic Boom continuity.
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
Wild Cat is a character that appears in the Sonic Boom television series. He is an anthropomorphic cat and Wild Cat's counterpart from an alternate dimension where Sonic never existed. He is also a member of the Rebellion.
Wild Cat is essentially a doppelganger of his Sonic Boom World counterpart and is so identical to him in both anatomy and attire.
At some point, Wild Cat joined the Rebellion, a resistance group that opposed Lord Eggman's rule over Seaside Island.
Following a trip through the Village Center, Wild Cat went to the Rebellion's camp where he would help out while Amy showed Sonic around.