Infinite the jackal

Infinite, formerly known as the "ultimate mercenary", is the secondary antagonist in Sonic Forces. He is an anthropomorphic jackal, and the former captain of the Jackal Squad mercenary group. During a raid, Infinite was hired by Dr. Eggman to become the leader of the Eggman Army, only for him and his squad to fall at the hands of Shadow the Hedgehog while protecting one of Eggman's facilities. Ashamed of his loss, Infinite decided to obtain the power of the Phantom Ruby not only as a means of becoming stronger, but also to abandon his "weak" past self.

Infinite is an anthropomorphic jackal with black fur. He has white long white, white chest fur that surrounds his neck, and white stripes on his back that resemble a ribcage. He also has a bushy tail with a white tip, and wears black gloves with silver streaks on the back, covering his sharp fingers. He also has pointed, metal black hi-tops, with his personal infinity symbol engraved on red soles. His right eye is colored blue, though he has a scar across it, and his left eye is yellow. He also has a medium-long white muzzle with cheek tuffs, a black nose, and noticeable fangs.

Infinite possesses the finalized version of the Phantom Ruby prototype that is fused to his chest. When Infinite channels the power of the gemstone, he can surround himself in a red aura, with red, glitch-like pixel particles scattered throughout his body.