Sonic is a slim anthropomorphic hedgehog with blue fur that covers most of his body and peach skin that covers his arms, muzzle, insides of his ears, and front torso. Sonic's eye colors are green and has a black nose. Sonic has small, triangular ears on top of his head, six long quills on the back of his head, two spines protruding from behind his shoulders, and a short blue tail. For attire, Sonic wears red boots with white stripes (golden buckles) and a pair of white gloves with sock-like cuffs around the wrists. Sonic’s personality: free-spirited, confident, and fiercely independent adventurer. Cocky but Compassionate. Impatient and Short-Tempered. Humble Hero.

Jet is an anthropomorphic hawk with green feathers covering his body and white feathers on his front torso. On his wrists there are dark green flame-like markings that reach his upper arms. He has a golden beak and bright blue eyes with red and black markings on the sides. His hair is styled like a mohawk with dark green tips. He also has a long three-feathered tail with dark green tips. For attire, Jet wears a pair of white gloves that possess visible lining with red and black cuffs and dark gray bands around each wrist. He also wears red, black and white boots with matching cuffs and gray soles, and goggles with yellow lenses, silver frames and dark gray straps. Jet’s personality: Arrogant and Cocky. Fiercely Competitive. Greedy but Honorable. Lazy Leader. Hot-Headed. Deeply Loyal.

Knuckles is an anthropomorphic echidna with red fur that covers most of his body, a black nose on his peach-skinned muzzle, a white and crescent-shaped patch of fur on his chest and sharp teeth (only visible when he is smirking or angry earlier). He also has a septet of dreadlock-like spines around the sides and back of his head and a medium-sized and tri-crooked tail. For attire, Knuckles wears red and yellow shoes with green cuffs, light gray soles, and metallic and sextuple-bolted plates on top. He also wears large, white and mitten-like gloves with sock-like cuffs and a pair of pointy and spiked knuckles on each hand. Knuckles personality: Duty-Bound and Stoic. Gullible and Naive. Hot-Tempered and Aggressive. Proud and Stubborn. Loyal and Kind-Hearted.