Sonic is a blue, 15 year old anthropomorphic hedgehog with skin-colored arms, muzzle and belly. He wears white gloves and red shoes with white straps on them. He has emerald green eyes and is best friends with Tails and Knuckles. Sonic is usually very cocky and confident, known for his super speed, but he also cares very deeply for his friends. He can’t swim and loves chili dogs.

Tails is a young, 8 year old anthropomorphic fox with amber fur and two tails with white tail tips. He has a white furry belly and blue eyes. Tails is know for his intelligence and expert piloting skills. He is Sonic’s best friend and loves mints.

Knuckles is a red, 16 year old anthropomorphic echidna with white boxing gloves with 2 spikes on each glove and red shoes with yellow stripes on them and green socks. He is known for his strength and passion for guarding the master emerald. He is arguably the strongest of the group, having punched Sonic out of his super form before. And he is also an expert digger

Shadow is a black-quilled, chronologically 50 but physically 15 year old anthropomorphic hedgehog with red highlights. He has 7 large spines on the back of his head with red stripes, with the 3 lower middle ones bending down and the 4 outer ones bending up. He wears white air shoes with red soles and golden inhibitor rings on his wrists and ankles. Shadow is known for his brooding, apathy of basically everything and edginess, but he is protective of his friends. He usually works alone. He is frienimies with Sonic.

Blaze is a slim and lavender-furred anthropomorphic cat with golden eyes and a pair of long eyelashes on each one, a small black nose and a white-furred muzzle. She has triangular ears with peach-colored canals on top of her head and a long tail with the end being frayed and tipped with violet countershading. Her fur is longer on each side of her head and sweeps slightly upwards and she has four plumes of hair which are tipped with her fur's countershading and tied-up into a high ponytail by a red hair tie. She also has a red oval gem on her forehead. For attire, Blaze wears a gold collar hanging from her neck, a purple tailcoat uniform with rose trim at the bottom, white leggings, white gloves and rose high-heels, as both of them have white fluffy cuffs on them. Her heels also featured a thick white stripe on each of the front and gray soles and heels. A noble soul and strong young lady, Blaze is highly devoted to the welfare of her people. She is normally rather calm and solemn but tends to conceal her true feelings. She is also often described as elegant, which is demonstrated through her movements and her ballerina-like fighting style. Being royalty, Blaze is quite stoic personality-wise, which is a perfect example of the spirit of the noblesse oblige, as she is very frequently doing her official duties, but still tries to do her best for everyone's peace and safety. Because of her lineage and her stoicism, she is sometimes too distant from those around her, but that is also the flip side of her good nature. She likewise always sticks to her personal principles, which means doing the best she can with pride in the position she is in. This may be the source of Blaze's strength, and it may also be what makes her so appealing. Blaze's trademark power is her pyrokinetic ability to brandish, create, and control the elemental force of fire with her body at will in any way she pleases. This ability is so deeply rooted in her that even her soul is alit with flames. Though Blaze initially had trouble controlling her flames, she has since become very adept at using them, turning them into an incredible force. Notably, she is able to handle them delicately enough to create small embers in the palm of her hand or defrost frozen creatures without harming them. Her power over fire is so advanced that she is even completely invulnerable to certain kinds of fire and can manipulate foreign flames at will too. Blaze is very close friends with Silver, but they are JUST. FRIENDS.

Dr. Eggman is depicted as somewhat taller and burlier. His arms and legs have become long and almost disproportionately thin, while his mustache has become more unkempt. For attire, he retains his signature glasses and gloves but incorporates the "Egg Goggles" which sit on his bald head, although he very rarely uses them. He now dons a red coat adorned with four ingot-like golden buttons on each side of the chest, each accompanied by white straps running to additional identical buttons on the back. The coat features silver linings down the back, arms, and front, yellow cuffs, and two extensions on the front with large silver buttons. Additionally, Dr. Eggman wears black pants with matching boots, which have circular plates on both sides of the ankles and three square ones extending up the shin. Described as the world's vilest person and worst screw-up, Dr. Eggman is an immoral mad scientist who only thinks about doing bad things. He always aspires to conquer the world to create what he deems a utopia, dubbed "Eggmanland". This gives him ridiculous delusions of grandeur and the psychotic belief that the world's problems will be solved if he rules it despite being far from the case.