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