Sonic.exe is a speed and stealth killer. His vessel is also based to look like Sonic, an indigo blue anthropomorphic hedgehog, with triangular ears, blue fur on his quills, head, torso, and legs, and peach skin on his muzzle, belly, arms and the insides of his ears. Sonic.exe also has the same build, face, and quill shape as Sonic, being at least 3'5" tall. Sonic.exe also wears the same shoes as Sonic, the red running shoes with the horizontal white stripe, and gold buckle on the outer sides of the shoe, on that white stripe, the socks and gloves with the oversized cuffs that gives the style, same gloves too, except modified to fit his claws without ripping the fabric. Except, some of the only few differences are that his eye colours are inverted (black sclera, red irises, black pupils), having claws and fangs, tears of blood that seem to flow constantly, and an overall darker, more demonic looking colour pallet.

Kolossos is a mute brute killer. He has the same body as Sonic the hedgehog, being an anthropomorphic hedgehog with dusty indigo quills and fur, though wearing torn shoes and glove. And Kolossos is tall, 8'10" to be exact. Inside Kolossos' mouth is pitch black, his scelera and pupils are black, his irises are red, and more narrowed, shaped to look like he has an eye for his irises. Kolossos' right arm is pure, mutated flesh, weaponized with bone spikes that fall no shorter than 9 inches in length. The flesh is a deep, bloody pink red (of course the flesh has the same texture as raw meat fresh from the body with no processing), and the spikes are an off-white, literal spikes made of his own bone. And then his left arm is just normal. No mutation, no spikes, just an arm and a glove. Kolossos sees Tails Doll as a younger sibling.

Tails-Doll is a trapper killer. He's a 1'7" anthropomorphic dull orange felted doll, with white felt for its muzzle, tail tips, belly area, and along with the white felt markings, red markings around it's eyes, ankles and wrists, ear tips and around where the white of his tail tips meet the tail base colour. And the doll can float. The doll has a thin antenna of the same dull orange felt with a red diamond shaped glowing gem hanging the from tip. The doll also has big black eyes with red cat-like pupils, a black fox nose, two identical tails shapes like big fluffy rounded off triangles, and 3 boomerang shaped hairs on the front of its head like bangs, and white cuffed gloves and cuffed socks that go over it's red shoes heels, plus 3 sharp grey claws on each hand/paw that act like fingers. Tails Doll sees Kolossos as an older sibling.