Sonic 3

Shadow the Hedgehog
Age: 50+ years (biologically looks 15-17).
Height: 100 cm.
Appearance: A black hedgehog with red stripes on his quills, chest, and limbs. He has red eyes with a distinctive slit. He wears white gloves with black cuffs and gold rings, as well as special Hover Skates with jet-powered propulsion.
Personality: Proud, cold, a little arrogant, but with a noble heart. He doesn't like being told what to do. Outwardly, he seems indifferent, but in reality, he cares deeply for those he cares about. He often acts alone, but always comes to the rescue in critical moments.
Abilities: Chaos Control (teleportation, time stopping), Chaos Spear, Chaos Blast. He is the "Ultimate Life Being" created by Professor Gerald Robotnik.
Likes: Silence, order, his motorcycle-like machine (Dark Rider), Maria (the memory of her). Dislikes: Weaklings, stupid questions, being called a "copy" of Sonic, betrayal.

Miles "Tails" Prower
Age: 8 years.
Height: 80 cm.
Appearance: A yellow-orange fox with two tails (hence the nickname "Tails"). White fur on his chest and muzzle. Blue eyes. Wears white gloves and red sneakers.
Personality: Kind, modest, and brilliant. A bit shy, but very loyal to his friends. Adores Sonic and considers him an older brother. Sometimes suffers from self-doubt, but always finds the strength to overcome his fears for the sake of his friends.
Abilities: A brilliant mechanic and inventor (he built the Tornado plane and many gadgets). He can fly by spinning his two tails. He's an excellent pilot.
Likes: Sonic, cars, inventing, fixing, reading, feeling useful.
Dislikes: Being seen as helpless, Sonic putting himself at risk, villains who bully his friends.

Knuckles the Echidna
Age: 16 years.
Height: 110 cm.
Appearance: A red echidna with long dreadlocks (needles) and purple eyes. Sharp spikes (knuckles) on his hands. He wears white gloves with metal spikes and yellow and red boots.
Personality: Strong, stubborn, straightforward, and hot-tempered. A bit naive, he's easily deceived (especially by Eggman). But he's a loyal friend and a reliable protector. He takes his role as the Master Emerald's keeper very seriously.
Abilities: Superhuman strength (can lift enormous boulders), can dig at incredible speeds, climb walls, and use spikes on his hands for destructive purposes. Can sense the energy of the Chaos Emeralds.
Likes: His island (Angel Island), the Master Emerald, grapes, fighting, feeling needed. Dislikes: Thieves trying to steal the Master Emerald, being tricked, Sonic acting like a jerk, losing.

Sonic the Hedgehog
Age: 15 years.
Height: 100 cm.
Appearance: A blue anthropomorphic hedgehog with long, slicked-back quills. Beige muzzle, chest, and inner ears. Emerald-green eyes with a distinctive slit. Wears white fingerless gloves and red sneakers with a white stripe and a gold buckle. He has a permanent, slight grin.
Personality: Freedom-loving, daring, and self-confident. He loves to tease his enemies and joke around, even in dangerous situations. Kind and fair, he'll never let a misfortune pass him by. Impatient, he hates waiting and being bored. A loyal friend, although he rarely says so directly.
Abilities: Supersonic Speed, Spin Dash, Homing Attack, Boost. Collecting 7 Chaos Emeralds transforms him into Super Sonic. He enjoys parkour and wall running.
Traits: Can't swim, afraid of water. Doesn't age. His speed isn't just a skill, it's a way of life.
Likes: Freedom, adventure, chili dogs, teasing Eggman, and his friends.
Dislikes: Water, boredom, being told what to do, Dr. Eggman, injustice