Sonic R/Characters

Unlockable Characters
Most unlockable characters are earned by collecting every coin on a course and then beating it. Dr. Robotnik/Dr. Eggman and Super Sonic are the exceptions.

Dr. Robotnik/Dr. Eggman
Beat the Radiant Emerald course to unlock this character.

Metal Sonic
Collect all the coins on the Resort Island course.

Tails Doll
Collect all the coins on the Radical City course.

Metal Knuckles
Collect all the coins on the Reactive Factory course.

Egg Robo
Collect all the coins on the Regal Ruins course.

Super Sonic
Collect all 7 Emeralds in the game to unlock this character.