Sonic is an anthropomorphic blue hedgehog with green eyes, upright posture, and incredible speed. Confident, adventurous, witty, and freedom-loving, he enjoys teasing his friends and challenging powerful opponents. He always stands up for those in danger. He can use Super speed, spin attacks, homing attacks, and powerful momentum-based combat.

Tails is an anthropomorphic orange-yellow fox with two tails, blue eyes, and upright posture. A brilliant inventor, mechanic, and pilot, he can fly using his twin tails. Kindhearted, intelligent, and resourceful, he supports his friends with technology and courage. He can use Twin-tail flight, mechanical engineering, piloting, and advanced technology.

Shadow is an anthropomorphic black hedgehog with red stripes, crimson eyes, and hover shoes. The Ultimate Life Form possesses immense speed, strength, and Chaos Control. Stoic, blunt, proud, and independent, he prefers solitude but protects the world when necessary. He can use Super speed, immense strength, Chaos Control which is a move that pauses time, Chaos Spear which is a ranged lighting strike like potential, and Chaos Blast which is a wide ranged explosion.

Amy is an anthropomorphic pink hedgehog with green eyes and a red dress. Energetic, compassionate, and determined, she fights using her powerful giant pink Piko Piko Hammer. She deeply values her friends, possesses impressive fighting skills, and refuses to be underestimated. She can use Superhuman strength, hammer combat, powerful strikes, and impressive agility.

Rouge is an anthropomorphic white bat with blue eyes and a passion for jewels. A cunning treasure hunter, skilled spy, and capable fighter, she is confident, charming, and calculating. She frequently clashes with Knuckles over the Master Emerald. She can use Flight, expert martial arts, powerful kicks, stealth, and jewel theft.

Blaze is an anthropomorphic lavender cat with golden eyes and pyrokinetic abilities. The reserved princess and guardian of the Sol Emeralds, she is disciplined, dignified, and fiercely protective. She wields powerful fire attacks and takes her responsibilities seriously. She can use Pyrokinesis, fire manipulation, aerial movement, and powerful flame attacks.

Silver is an anthropomorphic silver-white hedgehog with cyan eyes and powerful psychokinesis. Hailing from the future, he can lift and manipulate objects with his mind. Idealistic, earnest, and determined, he fights to protect the future and create a better world. He can use Psychokinesis, telekinetic levitation, object manipulation, and psychic barriers.

Dr. Ivo Eggman Robotnik is a human scientist with a bald head, enormous orange mustache, goggles, and a red coat. Brilliant, arrogant, and theatrical, he builds robotic armies and devastating machines to conquer the world and defeat Sonic.

Metal Sonic is an anthropomorphic robotic hedgehog created by Eggman to rival Sonic. His blue metallic body, red eyes, incredible speed, and advanced weaponry make him a formidable opponent. Silent, calculating, and relentless, he seeks to surpass and defeat Sonic. He can use Extreme speed, flight, energy attacks, advanced weaponry, and combat analysis.