🦔 The protagonist of the series and the fastest hedgehog in the world. He is free-spirited, confident, and has a strong sense of justice. He is a hero who never hesitates to face danger for his friends.

🦊 Sonic's best friend and a genius inventor. He can fly through the sky using his two tails. He is kind, brave, and always helps his comrades.

❤️ The guardian who protects the Master Emerald. He possesses incredible strength and the ability to climb walls. He is stubborn but has a strong sense of loyalty and responsibility.

🔥 The princess of the Sol Dimension and the guardian of the Sol Emeralds. She possesses powerful abilities to manipulate flames freely and is calm and highly responsible. Initially, she tried to handle everything alone, but after meeting Sonic and his friends, she gradually learns to trust and rely on her allies.

💗 A lively hedgehog girl who likes Sonic. She is a strong warrior who uses the Piko Piko Hammer. She is bright, kind, and cherishes her friends.

🖤 Sonic's rival, known as the Ultimate Lifeform. He uses Chaos Control and possesses superior combat abilities. He is taciturn but stands by his convictions until the end.

🦇 A bat who loves jewels and a talented spy. Her specialties are flight and flashy kicking techniques. She is confident and quick to assess the situation.

⚪ A hedgehog from the future. He moves objects and enemies freely using psychokinesis. He has a strong sense of justice and a pure personality.

🥚 A genius scientist who dreams of world domination. He stands against Sonic by creating numerous robots and machines. Though a villain, he often shows a comical side.

🐇 A kind and polite young rabbit girl. She goes on adventures with her Chao, Cheese. She is a character with a pure heart and courage. "She possesses the ability to heal people."