The boys

Sonic is 100 cm (3' 3") an anthropomorphic hedgehog with predominantly blue fur. He has small, triangular ears on the top of his head, seven quills that extend from the back of his head, with three on his back and a tail. He also has green eyes, a black nose, and peach fur on his stomach and muzzle, with his muzzle fur extending to the center of his nose ridge. His eyes in particular glow blue whenever he utilizes his chaos energy powers.

For attire, Sonic wears a pair of white gloves, a pair of white socks and red Puma Dare-based sneakers with white straps, white soles and yellow tags.

Sonic is adventurous, lively, fun-loving, and confident. A thrill-seeker with a passion for living life to the fullest, he loves running fast and free, which much of his early childhood was spent doing. However, he can be quite reckless and quick to act before thinking.

Sonic was born with the power to move at incredible speed, with Tails even stating that Sonic is the fastest creature in the galaxy. His speed is such that he can move fast enough to create blurry afterimages that appear in several places at once to the human eye, run over walls,

He can even reach such speeds that his entire surroundings either freeze or slow down considerably from his perspective; even bullets and missiles appear to come to a near stand-still to him as shown.

Knuckles is 4'10 an anthropomorphic Mobian echidna with predominantly red fur that covers most of his body, a black and pointy nose on his peach-furred muzzle, a white crescent-shaped patch of fur on his chest, and amethyst eyes. His eyes in particular glow red whenever he utilizes his chaos energy-based powers. He also has seven dreadlock-like spines around the sides and back of his head, broad shoulders, and a medium-sized, tri-crooked tail.

For attire, Knuckles wears two large white boxing gloves with pointy spiked knuckles attached to them. He also wears red and yellow mountain boots. Each has the top folded down to reveal a soft green interior. The soles are light gray and each possess a metal, hextuple-bolted plate on top

To match his strength, Knuckles is also extremely durable: he received no injury after getting rammed by a police car at high speed

Knuckles is an incredibly strong combatant, having trained since birth in the ways of combat.

Tails is a young 2 feet 7 inches, anthropomorphic fox with two tails instead of one. He has mostly amber fur with white fur around his muzzle, belly, and the tips of his tails. He also has sky blue eyes, triangular ears with white canals, and three locks of hair on his forehead.

Tails was born on a distant planet with a genetic abnormality that gave him two tails instead of one. Because of this, he was given the nickname "Tails", though he did not have any friends growing up in his home village because everyone thought his two tails were weird.

For attire, Tails wears white gloves with a light gray band around each wrist, and shoes that are red from the heel to the middle and white from the middle to the toe with dark gray soles.

Tails is a determined and plucky young fox, being willing to face the unknown on multiple worlds across the galaxy and deadly villains, all in an attempt to find Sonic, no matter what. He is also quite logical and intelligent, as seen by how he steadily narrowed his search for Sonic by thinking things through and using what he learned along the way

Shadow is 100 cm (3' 3") a black-furred anthropomorphic alien hedgehog. He has red eyes, a patch of white fur on his chest, a black nose, a tan muzzle and small, triangular ears with tan canals. He has seven quills on the back of his head, four curving upwards and three downwards, and a short, pointy tail. Some red stripes adorn the tops of each quill, the edges of his eyes and extend down the sides of all four limbs from the elbows and knees.

For attire, Shadow wears white gloves with black cuffs and red tongues; red, white and black shoes, which, like his gloves, have black cuffs and red tongues. He wears also golden rings, one on each of his wrists and ankles.

Tails is a determined and plucky young fox, being willing to face the unknown on multiple worlds across the galaxy and deadly villains, all in an attempt to find Sonic, no matter what. He is also quite logical and intelligent, as seen by how he steadily narrowed his search for Sonic by thinking things through and using what he learned along the way

He is similarly greatly resourceful, as exemplified by the various gadgets he has invented and his ability to analyze the options in critical situations. However, despite his intelligence, Tails can be slightly clueless, such as not realizing why his nickname is obvious. He is also slightly lacking in social etiquette,

Tails is able to achieve flight by spinning his twin-tails like helicopter rotors. He is shown to be able to fly at considerable speed, being able to clear a forest area within seconds and keep up with Sonic's mundane running speed. He has reflexes to match his speed as well, being able to dodges both bullets and lasers while in mid-flight. Just like how Sonic and Knuckles both have trails of their respective colors when they move at high speed, Tails generates a yellow trail when he does so

Tails is shown to possess genius-level intelligence and is a highly advanced mechanic and inventor

Shadow's heart was filled with nothing but pain, rage, and grief over Maria's death. He was left deeply traumatized by the loss of the only person who had seen past his cold exterior to the confused and conflicted being within himself. He was intensely resentful of G.U.N for killing Maria and imprisoning him for 50 years. Though angry and resentful, Shadow's rage had yet to reach a murderous level. Shadow is not entirely ruthless, and he does have some mercy. He gives his enemies the chance to walk away from fighting him, and should they still choose to fight him Shadow, will back down after beating them down until they are too weak to fight anymore.