Male 15 years old 100cm Green eyes Blue hedgehog beastman Free-spirited and full of justice A hero who has been thwarting Eggman's schemes and the fastest hedgehog in the world. He can run at the speed of sound and reach light speed at his maximum. He likes chili dogs, music, and running, while he dislikes slow things and dishonesty. His home is South Island. He believes life is a continuous adventure and cherishes his friends.

Male 8 years old 80cm Blue eyes Yellow fox beastman Pure and kind, yet courageous Sonic's best friend. He has two fox tails and can fly through the sky for a short time by rotating them. He loves handling mechs and machinery, while he dislikes lightning and ghosts. Tails was bullied from birth for having two tails. However, since meeting Sonic, he has been growing little by little, following Sonic's side to help him without being held back by his past.

Male 16 years old 110cm Purple eyes Red echidna beastman Powerful and cheerful, yet stubborn Sonic's ally and rival. He has spiked knuckles. He can glide through the air or climb walls. He possesses enough strength to crush boulders with a single punch. He is the guardian of the Master Emerald. He likes grapes. Knuckles is of the Echidna tribe. He was born on Angel Island, a floating island. However, when a creature made of water called Chaos indiscriminately slaughtered the Echidnas for the Chao, all Echidnas except Knuckles perished. He stopped Chaos's rampage using the power of the Master Emerald. Although Chaos went missing, Knuckles still protects the Master Emerald on Angel Island. While lonely, it is his sense of duty. He occasionally visits Green Hill to see his friends, but often returns to Angel Island because of Rouge.

Female 12 years old 90cm Green eyes Pink hedgehog beastman Bright and energetic mood maker A passionate and tough woman of action. She is Sonic's friend and has a crush on him. It is speculated that she possesses strength equal to Knuckles (???). She carries the Piko Piko Hammer. She likes soft-serve ice cream and strawberry shortcake, while she dislikes losing. She studies tarot cards. Amy was kidnapped by Eggman in the past, but fell in love with Sonic after he rescued her. She doesn't care where Sonic goes. Unlike Amy, who is in love with him, Sonic considers her a friend.

Female 6 years old 60cm Brown eyes Vanilla-colored rabbit beastman Very polite, kind, and highly curious. A fragile young child. She has long rabbit ears and can glide by flapping them. She is lifelong best friends with a Chao named Cheese. Cheese says 'Chao!' when responding or speaking, and as a member of the Chao species, cannot speak other words. She admires Sonic. She likes soft-serve ice cream and dislikes fighting. Cream was kidnapped by Eggman in the past, but Sonic rescued her, and she has admired him ever since.

Female 14 years old 95cm Yellow eyes Purple cat beastman Cool and calm, but harboring hot emotions within The Princess of Blaze's world and the guardian of the Sol Emeralds. She uses pyrokinesis. She is Silver's partner, though they are closer to being friends. She dislikes high places and is very shy around strangers.

Male 14 years old 100cm Yellow eyes White hedgehog beastman Strong sense of justice and pure-hearted He came from his own world to change the future. He has a strong sense of justice, is naive, and possesses a firm will to change the future. He uses psychokinesis. He is Blaze's partner, though they are closer to being friends. According to Blaze, Silver can sometimes get excited or giddy like a child.

Male Estimated 50 years old 100cm Red eyes Black hedgehog beastman Cold-headed and anti-heroic The Ultimate Lifeform, Sonic's ally and rival. Like Sonic, he can run at the speed of sound and is more powerful than Knuckles. He has a radical side, using any means necessary to achieve his goals. He runs in a skating posture. He can use Chaos Control to warp space-time, Chaos Blast to release chaos energy from his body to cause an explosion, and Chaos Spear to create three spears of chaos energy in his hands to fire. He dislikes fools. 50 years ago, he woke up from cryogenic sleep at a certain base and met a girl named Maria. The two became friends, but she was shot and killed after leaving him with the final wish to 'give humanity a chance to be happy' before helping him escape from G.U.N. He lives on remembering that final wish.

Female 18 years old 105cm Teal eyes White bat beastman Strong competitive spirit and a thorough, calculating realist She loves jewels, and Knuckles' Master Emerald is no exception. Once she targets a gem, she always makes it hers. She is a clever and bold woman of action. She can fly by flapping her bat wings or climb walls. Her trademark is the screw kick. Rouge originally worked for G.U.N. She doesn't have a particular grudge against Shadow, and they get along without issues.