Appearance: Cobalt-blue fur, tan muzzle and arms, emerald-green eyes, white gloves, and iconic red sneakers with a white strap and gold buckle. Often portrayed with quills that arch back, giving him a sleek, aerodynamic silhouette. Personality: Carefree, confident, and intensely independent. Possesses an unwavering sense of justice and a "live for the moment" attitude. He is impatient with stillness, prone to sarcasm, but deeply loyal and protective of his friends. Life Goal: To live life at his own speed, explore the world, and thwart Dr. Eggman’s schemes to ensure freedom for all living things.

Appearance: Yellow-orange fox, two twin tails used for flight, white muzzle and belly, blue eyes, and white gloves with red and white shoes. Personality: Intelligent, humble, and deeply loyal. He is a mechanical genius who overcomes his natural shyness through bravery and reliance on his friends. Life Goal: To use his engineering skills to support Sonic and invent technology that protects the world from evil.

Appearance: Red fur, unique dreadlock-like spines, white crescent-shaped patch on his chest, spiked knuckles on his mitten-like gloves, and purple eyes. Personality: Stoic, serious, and fiercely determined. He is physically powerful, somewhat gullible, and deeply committed to his duty as a guardian. Life Goal: To protect the Master Emerald and ensure the safety of Angel Island at all costs.

Appearance: Pink fur, green eyes, wearing a red sleeveless dress, red boots, and white gloves. Often carries a giant Piko Piko Hammer. Personality: Energetic, optimistic, and fiercely determined. She is deeply affectionate, occasionally hot-tempered, and possesses an unwavering belief in the good within others. Life Goal: To prove her independence, stand alongside her friends as a capable hero, and express her feelings honestly while protecting those she loves.

Appearance: Black fur with red streaks on his arms and legs, white chest fur/fluff, red-accented hover skates, and ruby-red eyes. Personality: Stoic, brooding, and pragmatic. He acts with ruthless efficiency and carries the burden of his past, masking his inner moral conflict with a cold, loner exterior. Life Goal: To discover his true purpose, uphold the promise he made to Maria Robotnik, and protect the world in his own uncompromising way.