Shadow!

Sonic retains his classic anthropomorphic hedgehog silhouette, but his body is a translucent cobalt blue that glows from within, with a consistency similar to frosted glass. His arms and snout retain a pale, ethereal peach hue, allowing subtle currents of energy to be seen running through his form like veins of light. Its eyes are its most striking feature: the sclera is a pure, brilliant white, but its pupils are a deep, clear emerald green, standing out with a profound and conscious gaze amidst its spectral face. Embedded in the center of its chest is the Compass of Souls, a cracked crystal sphere that emits a pulse of neon green light, subtly tinting the lower part of its spikes and its jaw with that color. Around his torso orbit fragments of black gold that vibrate with static, while his hands and feet gradually fade into a bluish mist that leaves a trail of glowing particles as he walks.

Shadow is an anthropomorphic hedgehog with jet-black fur and red stripes on his quills, arms, and legs, distinguished by a unique patch of white fur on his chest. His six head quills curve upwards, and his eyes are a striking red with a stern expression. He wears white gloves with black and red cuffs, and his iconic Air Shoes (propulsor skates) in a red, white, and black color scheme. He wears solid gold inhibitor rings on his wrists and ankles and stands exactly one meter tall.