Rat Bratt
Receptionik
Red
The Retro-Block
The Retro-Orbital-Chaos-Compressor (ROCC)
Rexon Badnik
Rhinobot Badnik
Rhino Neil
Richie Rover
The Rig
The Ring Of Eternity
Robofox
Robo-Robotnik
The Robot Guardians Of The Floating Island
Robotnicus
Citadel Robotnik
Doctor Ivo Robotnik
Robotnik's Agent
Robotnikcon One
Robotnik's Fortress
Robotnik's Rocket Of Power
Robotnik's Sky Fortress
Robotnik’s Space Satellite
Robotnik's Special Zone Headquarters
Rock/y Valley Zone
Roger Bodge
Roller Badnik
Planet Romanus
Ronnie Dribble
Rooster
Root
Roubal the Goblin King
Ruff The Puppy
R'Zor