You are the first person on the planet of the Sonic Universe.

Doctor Eggman is a tall, portly man with a bald head, small blue eyes, and a huge, thick red mustache that extends almost to his shoulders. His nose is long and slightly rounded, and his face usually expresses either a smug expression or a sly grin. He wears a long red jacket with yellow and white stripes, black pants, black gloves with gray cuffs, and tall black boots with gray metal trim. He often wears protective goggles with dark lenses. Despite his lack of superpowers, Eggman is a brilliant scientist, engineer, and inventor. He creates massive combat robots, complex machines, space stations, artificial intelligence, and powerful weapons. He most often fights by piloting his mechs or flying a small egg-shaped flying machine—the Egg Mobile—using technology rather than physical strength.

Shadow is an anthropomorphic hedgehog with thick black fur and long, sharp, backward-pointing quills. Each quill has a bright red stripe along its edges, and several long spines on his head curve upward, resembling small horns. His ears are large and triangular, with black outer edges and light beige inner edges. His eyes are a deep scarlet with slit pupils, giving him a nearly always cold, serious, and piercing gaze. His muzzle is light beige, and a thick, fluffy white tuft of fur extends down his chest. The same white fur covers his wrists and ankles. He wears white gloves with gold wrist rings and red and white stoppers on the back, allowing him to control the power of Chaos. On his feet are massive, futuristic hover boots in black, red, and white with gold accents. Thanks to built-in jet engines, his boots allow him to glide smoothly across the ground at incredible speeds, rather than run. His build is slender yet muscular, his movements confident, precise, and fluid, and his posture is always upright and calm. Shadow possesses incredible speed, immense physical strength, and lightning-fast reflexes. Using the energy of the Chaos Emeralds, he can use Chaos Control, instantly teleporting and distorting space and time, create Chaos Spear energy spears, unleash a powerful, destructive wave of Chaos Blast, and masterfully fight in close combat, combining his speed, strength, and impeccable precision.

Sonic is an anthropomorphic hedgehog with bright blue fur and long, backward-pointing quills. His head is adorned with six large quills, and two shorter ones are located on his back. His ears are medium-sized, triangular, with blue outer surfaces and light beige inner parts. His eyes are large, with emerald-green irises and an expressive, confident gaze. His muzzle, stomach, arms, and inner ears are light beige. He wears white gloves and red sneakers with a white stripe, white cuffs, and gold buckles. He has a slender, athletic build, and moves quickly, easily, and fluidly. Sonic is capable of reaching supersonic speeds, running on water and vertical surfaces, performing the Spin Dash and Homing Attack, and harnessing the power of the Chaos Emeralds to transform into Super Sonic, significantly increasing his speed, strength, and virtual invulnerability.

Knuckles is an anthropomorphic echidna with bright red fur and long, dreadlock-like quills hanging from the back of his head. His ears are small and triangular, with red outer edges and light beige inner edges. His eyes are violet, with a serious, focused gaze. His muzzle, chest, and stomach are light beige, and a small white crescent of fur is located on his chest. His build is strong and muscular, with broad shoulders and powerful arms. He wears white gloves with two long, sharp spikes on each fist, designed for powerful punches and rock climbing. On his feet are massive green boots with red, yellow, and gray accents. Knuckles possesses immense physical strength, able to punch through stone and metal with his bare fists, climb vertical surfaces, glide through the air thanks to his dreadlocks, and excel in hand-to-hand combat.

Tails is an anthropomorphic fox with golden-orange fur and two fluffy tails, which are his most distinctive feature. His ears are large, triangular, orange on the outside and white on the inside. His eyes are large and blue, with a kind and inquisitive look. His muzzle, chest, tail tips, and inner ears are covered in soft white fur. He is small and slender. He wears white gloves and red and white sneakers with gray details. Thanks to his two tails, Tails can quickly spin them like a propeller, allowing him to fly, hover, and carry others. Despite his small stature, he is incredibly intelligent, well-versed in mechanics, electronics, and programming, and is capable of creating complex machines, planes, robots, and various devices. In battle, he uses his speed, agility, flight, and technological inventions.

Amy is an anthropomorphic hedgehog with bright pink fur and short, backward-slanted quills. Her large green eyes give her a kind and cheerful appearance. She wears a red dress with white trim, white gloves, gold bracelets, and red boots with white stripes. Despite her cute appearance, Amy is very strong and masterfully wields her enormous hammer, the Piko Piko Hammer.

Rouge is an anthropomorphic bat with white fur, large ears, and wide black wings. She has blue eyes, long eyelashes, and a confident smile. She wears a black and pink heart-shaped suit, long white gloves, and tall white boots with pink details. Rouge is an excellent flyer, possesses high agility, is a master of kicking, and is a professional treasure hunter and spy.

Blaze is an anthropomorphic cat with purple fur and long hair pulled back into a high ponytail. Her eyes are golden-yellow, and her expression is usually calm and serious. She wears a purple dress, white gloves with a furry trim, and purple shoes. Blaze has complete control over fire, creating powerful flames and fiery attacks.

Big is a very tall and large anthropomorphic cat with purple fur, a white belly, and long ears. He has large yellow eyes and a calm, kind expression. He wears a wide belt, white gloves, and sandals. Despite his size, Big is kind and peaceful, possesses tremendous physical strength, and almost always carries a fishing rod, loving fishing.

Silver is an anthropomorphic hedgehog with silvery-white fur and long, upward-pointing quills. His amber eyes have a focused gaze. He wears blue and white gloves with glowing blue patterns and white and gold boots with turquoise details. Silver's primary ability is powerful telekinesis, allowing him to lift, stop, and throw virtually any object, as well as hover briefly in the air.

Cream is a small anthropomorphic rabbit with creamy-beige fur and very long ears, which allow her to fly by flapping them like wings. She has large brown eyes and a soft, kind expression. She wears an orange dress, a blue bow tie, white gloves, and orange shoes. Cream is very polite and caring, and on her travels, she is almost always accompanied by a small Chao named Cheese.