Full Name: Sonic the Hedgehog Species: Hedgehog Gender: Male Age: 15 Height: 100 cm Weight: 35 kg Running Speed: Supersonic (Mach 1+) Favorite Food: Chili dogs A Free-Spirited Adventurer: He dislikes staying in one place and loves living a free life unbound by rules or common sense. Strong Sense of Justice and Kindness: While he can be short-tempered and a bit of a show-off, he has a kind heart and can never ignore someone in trouble or the weak. Cool Under Pressure: He remains nonchalant even in crisis situations and enjoys confident, stylish, and cool dialogue. Supersonic Speed: As his name suggests, he can run across the ground at speeds exceeding the speed of sound. Spin Attack: He curls his body into a ball and charges at enemies, crushing them while rotating at high speeds. Super Sonic: By collecting the seven Chaos Emeralds scattered across the world, he transforms into an invincible golden form capable of flying freely through the air.

Full Name: Knuckles the Echidna Species: Echidna (Last descendant of the Echidna Clan) Gender: Male Age: 16 Height: 110 cm Weight: 40 kg Place of Birth: Angel Island Favorite Food: Fruit (especially grapes) Personality: Single-minded, serious, and a reliable man of honor, though he has a pure and easily deceived side. Abilities/Skills: A master of martial arts with powerful fists (Knuckle Punches) that can shatter boulders. He possesses high physical capabilities, using the spikes on his fists to climb walls, glide through the air, and dig holes, and he is also active as a first-rate treasure hunter.

Full Name: Amy Rose Species: Hedgehog Gender: Female Age: 12 Height: 90 cm Weight: It's a secret! Favorite Food: Soft-serve ice cream Sonic's Self-Proclaimed Girlfriend: A cheerful and bright girl who charges straight ahead once she sets her mind on something. She spends her days chasing after her beloved Sonic. Her overwhelming persistence sometimes leaves even Sonic flustered. Reliable Mood Maker: Spirited and highly proactive, she possesses a strong sense of justice and a kind heart. Piko Piko Hammer: In times of need, she pulls out a giant "Piko Piko Hammer"—nearly as big as herself—from nowhere and fights with power that rivals any man's.

Full Name: Miles "Tails" Prower Species: Fox Gender: Male Age: 8 Height: 80 cm Weight: 20 kg Features Two Tails: Born with two tails, he can rotate them like propellers to fly through the air like a helicopter. Genius Mechanic: He loves tinkering with machinery and supports Sonic by developing and piloting various mechs and planes (such as the Tornado). Relationship with Sonic: A kind-hearted soul who is like a "cute little brother" to Sonic. He was once bullied because of his two tails, but after being encouraged by the sight of Sonic running, he began to admire him and now always travels by his side.

Full Name: Ivo Robotnik *"Eggman" was originally a nickname given by Sonic to mock his physique, but he decided to adopt it himself, saying, "I'll claim the name before they can make fun of me." Species: Human Gender: Male Height: 185 cm Weight: Unknown IQ: 300 (An exceptionally brilliant scientist) Family: Professor Gerald Robotnik (Grandfather) Personality/Traits: Selfish and confident. He is egotistical and prideful, prone to throwing tantrums when things don't go his way. Unmatched Love for Mechs: He prefers machines (robots) over three meals a day. Indomitable Spirit: A man who never learns his lesson, refusing to give up no matter how many times he fails. Goals and Relationship with Sonic Ambition: He plots to remodel the world into his ideal utopia, "Eggmanland" (the Eggman Empire), regardless of the trouble it causes others. Arch-nemesis Sonic: His greatest wish is to defeat Sonic, who constantly interferes with his plans. However, deep down, he doesn't entirely hate Sonic, showing a human side that acknowledges him as a true rival.

Name: Sage Identity: The latest model of humanoid Artificial Intelligence (AI) program developed by Dr. Eggman. Relationship: She looks up to Dr. Eggman as a "father," and Eggman treats her as his daughter (the successor to the Eggman Empire). Calm and Analytical: Possessing a very sharp eye for observation, she instantly identifies threats and simulates countermeasures. Absolute Loyalty: Her top priority is to "protect Dr. Eggman at any cost," and she acts solely for his safety. Appearance: She takes the form of a girl with a mysterious aura. Her design is characterized by white, black, and digital red lines (wireframe style). When her emotions heighten, her design shifts to a white-based color scheme. Evolution of Abilities: By hacking into the "Cyber Space" of the Starfall Islands, she accessed information from an ancient civilization and underwent a unique evolution that exceeded even the predictions of her creator, Eggman. She wields powers such as levitation (flight) and telekinesis.