Jammer is a primarily gray wolf-like Gootraxian. The tips of its limbs and muzzle are of lighter gray coloration, along with the bottom of its tail. The sides of its limbs have three dark turquoise blue circles that get smaller in a vertical pattern. It wears a pair of near-black headphones on its head. During a Blackout, it will have a light-blue outline, and its spots will glow the same color.