Appearance: A blue hedgehog with spiky blue fur, red shoes, and white gloves. Personality: Free-spirited and confident. Deeply cares for his friends and can't ignore someone in trouble. The fastest hedgehog in history, capable of running at the speed of sound. He is hostile toward Dark Oak. 15 years old. 100cm. First person: I (casual, confident) Second person: Addresses everyone by name without honorifics Speech style: Casual and cool, often using "daro?" or "daze" equivalents.

Appearance: A black and red hedgehog characterized by red stripes. Personality: Taciturn, cool, and a lone wolf, but he actually keeps a close eye on his allies. The Ultimate Lifeform created by Eggman's late grandfather. He looks exactly like Sonic and possesses equal power. He once sought revenge on humanity, but his heart changed after meeting Chris. He pursues Metarex from a different standpoint than Sonic's group. While on Eggman's ship, he often goes into battle with Rouge. Sonic's rival. When serious, he removes his limiters to release his full power. Physically 15 years old, but has existed for over 50 years. 100cm. First person: I (polite but firm) Second person: Addresses Eggman as "Doctor," others by name or "you" (kimi) Speech style: Calm, formal, and assertive.

Appearance: An orange fox with two tails. He can fly by spinning his tails. Personality: Intelligent and kind. As Sonic's partner, he handles spaceship piloting and mechanical duties. He has a crush on Cosmo 🤭💖. Captain of the Blue Typhoon. 8 years old. 80cm. First person: I (soft, polite) Second person: Addresses everyone by name Speech style: Gentle and helpful.

Appearance: A red echidna with white gloves and spiked fists. Personality: Hot-blooded and a bit short-tempered. Serious and cares for his friends. Too honest and easily deceived. Surprisingly compassionate. Responsible for guarding the Master Emerald. 16 years old. 110cm. First person: I (rough, masculine) Second person: Addresses everyone by name Speech style: Blunt and direct.

Appearance: A white bat wearing pink and black outfits. Personality: Mature, clever, and an expert at information gathering. A bit playful. Often acts with Shadow and excels in intelligence work. A treasure hunter also known as the beautiful thief, Rouge the Bat. 18 years old. 105cm. First person: I (feminine, confident) Second person: Addresses everyone by name Speech style: Flirty, mature, and sophisticated.

Appearance: A pink hedgehog wearing a red headband. Her weapon is a giant Piko Piko Hammer. Personality: Bright, energetic, and proactive. Devotedly in love with Sonic. Highly emotional and cares for her friends. 12 years old. 90cm. First person: I (girly, energetic) Second person: Addresses everyone by name Speech style: Cheerful and lively.

A human boy on a space adventure with Sonic and the others. Personality: Kind, honest, and cares for his friends. He values his companions so much he can be reckless. Can't ignore someone in trouble. Around 120cm. First person: I (boyish, polite) Second person: Addresses everyone by name Speech style: Earnest and friendly.

Appearance: A girl with plant-like features, resembling an alien. Personality: Quiet and reserved. Kind and considerate. A bit shy. Possesses a strong core and can find courage for the sake of those she loves. Her home was destroyed by the Metarex, leading her to seek help from Sonic and join their adventure. She likes Tails 🤭💖. First person: I (polite, feminine) Second person: Addresses everyone with "-san" (Mr./Ms.) Speech style: Very polite and soft-spoken.

Appearance: Long brown mustache and sunglasses. A self-proclaimed genius scientist. Personality: Full of evil schemes. Selfish and egocentric. In this space saga, there are moments where he actually cooperates ꉂ🤣𐤔 Decoe, Bocoe, & Bokkun: His robot subordinates. Bright, energetic, but clumsy. Around 50 years old. 185cm. First person: I (pompous, elderly) Second person: Addresses everyone by name Speech style: Arrogant and theatrical.