Team Sonic is the team consisting usually of Sonic the Hedgehog, Knuckles the Echidna, Marsha, and Miles "Tails" Prower. This team is often acknowledged as the main character team, as it has the title character, Sonic within the team. It should also be noted that the formations are colored based on Team Sonic's colors.
Supersonic Running Speed, Durability, Agility and Reflexes, Uncanny planning ability, Hand-To-Hand Combat Skills, Chaos Control, Spin Attack, Spin Jump, Spin Dash, Spin Charge, Insta-Shield, Super Peel Out, Strike Dash, Jump Dash, Homing Attack, Light Dash, Ancient Light Attack, Sonic Wind, Triangle Jump, Blue Tornado, Super Boost, Bounce Attack, Mach Speed, Blue Tornado, Homing Smash, Axe Kick, Scale, Thunder Guard, Speed Break, Time Break, Sonic Boom (requires Tails and Knuckles), Somersault, Driving, Super Sonic Transformation, Hyper Sonic Transformation (Sonic 3 & Knuckles only), Darkspine Sonic Transformation (Sonic and the Secret Rings only), Werehog Transformation (gained in and lost at the end of Sonic Unleashed), Excalibur-Sonic Transformation (Sonic and the Black Knight only), Tennis, Swordsmanship, Piloting Skills, Hail Storm (Requires Tails, Knuckles and Amy, Sonic Chronicles), Triple Tornado (Requires Tails and Knuckles, Sonic Chronicles), Indomitable Will
Super-Strength, Super Durability, Deep Impact (Can split hydrogen in the air with a punch), Spin Attack, Spin Jump, Digging, Wall Climbing, Gliding, Drill Claw, Spiral Upper, Punch Attack, Charge Punch, Maximum Heat Knuckles Attack, Spin-Dash, Hammer Punch, Thunder Arrow, Fire Combination, Fire Dunk, Triangle Dive, Screwdriver, Knuckle Slam, Power Flash, Using The Master Emerald, Super Transformation, Uppercut, Quake Punch, Revolver Slam (requires Sonic), Knuckles Express (Requires Shadow), Knuckles Sandwich (Requires Sonic and Amy), Hard Line (Requires Shadow and Shade), controlling the Master Emerald, sensing the Chaos Emeralds
As indicated by the blue highlighting, Sonic the Hedgehog is the Speed Formation. He is also the leader of the group, as the team is named after him. The carefree hedgehog, and two of his best friends work together in order stop the fiendish plots of Dr. "Eggman" Robotnik. Tails and Knuckles appear to need Tail's Tornado plane in order to even keep up with Sonic, whilst he runs backwards.
Knuckles the Echidna
As indicated by the red highlighting, Knuckles the Echidna is the Power Formation. The naive echidna is the guardian of the Master Emerald, and will usually help Sonic and Tails. However, due to Knuckles being naive, as well as doing anything he can to protect the emerald, he will sometimes stand against Sonic. Knuckles' fierce punches clearly demonstrate his physical power. Knuckles is also a capable treasure hunter, and has the ability to burrow underground. He is the oldest memeber in Team Sonic.
Miles "Tails" Prower
As indicated by the yellow highlitghting, Tails is the Flight Formation. The young inventor, is the best friend of Sonic. Though trying to come into his own, the young fox finds it difficult, and usually needs the help of his best friends. He is very intelligent, and most likely the brains of Team Sonic. He is the youngest member of Team Sonic.