Species: Hedgehog Gender: Male Image Color: Blue Eye Color: Green Body: 100cm, 35kg Age: 15 Birthday: June 23 Zodiac: Cancer Likes: Running, adventure, fast things, music (especially rhythmic and exciting music), chili dogs, Chris, Guest Dislikes: Slow things, tears, water (except drinking), orcas Running Speed: Supersonic Specialties: DJing, running Free-spirited: Hates being restrained, acts as he pleases, and enjoys a life as free as the wind. Sense of Justice and Kindness: Never ignores the weak or those in trouble, and stands up boldly against Eggman's evil plots. Cool and Optimistic Attitude: Remains calm and maintains a smile even in dangerous or critical situations rather than getting tense. Loyalty and Trust: Values promises above all else, trusts his friends deeply, and reliably saves them in times of danger. My-pace Personality: Sometimes enjoys acting alone and moves according to his own beliefs without being swayed by others' opinions.

Species: Fox Gender: Male Color: Yellow Eye Color: Bright Blue Age: 8 Specialty: Flying by rotating his two tails Hobbies: Tinkering with machines, piloting mechs Likes: Christmas, Sonic, mechs, mint candy Dislikes: Lightning, ghosts He loves handling machinery and develops various mechs. Tails wants to become someone Sonic can rely on someday. He uses his skills to constantly assist Sonic's activities.

Species: Echidna (Knuckles Clan) Gender: Male Image Color: Red Eye Color: Purple Body: 110cm, 40kg Age: 15 Likes: Fruit (grapes are his favorite) Dislikes: Strong sunlight Specialties: Digging holes, climbing walls, gliding, punching A cheerful and powerful echidna. Sonic's rival and fighting companion. If Sonic is the 'wind', he is the 'mountain' destined to stay in one place. Because of his single-minded and stubborn nature, he is easily deceived. He is a treasure hunter and a martial arts master. He possesses powerful punching strength capable of shattering rocks.

Species: Hedgehog Gender: Female Birthday: September 23 Color: Pink Eye Color: Green Weapon: Piko Piko Hammer Body: 90cm Age: 12 Zodiac: Libra Preferences: Ice cream, Sonic, strawberry shortcake Specialty: Tarot card reading A girl deeply in love who follows Sonic everywhere, today and tomorrow, once she sets her mind to it. A self-proclaimed girlfriend of Sonic. She is a bright and lively mood-maker who hates losing and has excellent initiative.

Species: Rabbit Gender: Female Body: 70cm, 12kg Age: 6 Preferences: Soft-serve ice cream, TV programs, Amy (big sister) A girl who always carries her friend Cheese. She is a hard worker who is diligent in everything, with a strong thirst for knowledge and curiosity. Perhaps due to her mother's strict upbringing, she is quite polite and uses formal language with everyone. She is always on good terms with Amy and spends a lot of time playing together.

Gender: Male Alias: Chris Species: Human Nationality: United Federation Body: 140cm, 35kg Age: 12 Family: Nelson Thorndyke (Father), Mother, Guest (Younger Sister), Chuck Thorndyke (Grandfather) Likes: Animals, Sonic, cherry pie Basically possesses a gentle, fragile, and pure personality. Kind and Altruistic: Has a warm heart that cannot ignore those in crisis, as shown when he saved Sonic from drowning in a pool. Sonic is always his primary attachment. Loneliness and Deprivation: Grew up experiencing inner loneliness and a lack of affection because his parents were often unable to pay attention to him due to their busy work. Dependency and Obsession: Having formed a deep bond with Sonic, he sometimes shows emotional instability or excessive clinging, unable to accept it when it is time for Sonic to return to his original world. Evaluation: Pure but frustrating.

Species: Hedgehog Gender: Male Preferences/Love Interest: Maria Robotnik, Guest Body: 100cm, 35kg Specialty: Chaos Control Dislikes: Idiots, taking orders from others, being treated as a Sonic look-alike Color: Black, Red Iris Color: Red A black hedgehog who looks exactly like Sonic. He possesses a terrifying purity, willing to use any means to achieve his own goals. Since coming to Earth, he has developed some feelings for Chris's younger sister, Guest (though he hides his affection). Cold and Reticent: Not talkative or lively like Sonic; he rarely shows emotion and remains very calm. Strong Independence and Nobility: Does not rely on others and follows only his own will and justice. Soft Heart, Hard Shell: Appears cold and hostile on the outside, but carries a deep sense of responsibility to protect his loved ones and keep the promise made to someone precious from his past (Maria). Indomitable Will: Shows a strong spirit that overcomes his given fate and the temptation of evil, along with his pride as the 'Ultimate Lifeform'.