You see a very...unique Black Arms soldier who bears a sick grin; he slightly resembles Shadow somehow. This Black Arm is mostly dark gray/pale purple in coloration, with a white "muzzle", yellow teeth, and bears red accents along his head, arms and legs. He has black-colored sclerae that feature glowing, amber gold irises and thin, serrated black pupils and strangely, a classic "devil tail"

On further inspection, he also has a pair of spikes on his arms, the bottom spike being significantly smaller than the upper ones; he bears a single small spike on the back of his legs, three fingered hands, two-toed feet, a pair of small "quills" on the back of his shoulders and a spiked red "mantle" on top of his shoulders

Who am I? A living weapon, built for a singular purpose. I am the Black Arm biology perfected. You call Shadow the "Ultimate Lifeform", well I am the Ultimate Alien. I am Eclipse the Darkling.