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Race Car Patrol,

Autobot Micromasters. This is one of the Micromaster Patrols. The group is formed by:
Free Wheeler
Roadhandler
Swindler
Tailspin

Race Track Patrol,

Decepticon Micromasters. This is one of the Micromaster Patrols. The group is formed by:
Barricade
Ground Hog
Motorhead
Roller Force

Rad,

Autobot Actionmaster. His weapon transforms into some sort of animal.

Raindance,

Autobot. Transforms from cassette into a plane. Together with Grand Slam he forms a robot: Slamdance. He is one of the Mini-Cassettes.

Ramhorn,

Autobot. Transforms from rhinoceros into a cassette. He is one of the Mini-Cassettes.

Ramjet,

Decepticon. Transforms into a jet. He is one of the Decepticon Planes.

Ramjet,

Decepticon from the second generation. Second release of Ramjet, but the colors are different. He is one of the Skyraiders.

Rampage,

Decepticon. Transforms into a panter. He is one of the Predacons.

Rampage,

Predacon. Comes from the Beast Wars. He is a Transmetal Figure, transforms into a king crab or a triple barreled tank.

Ransack,

Decepticon. Transforms into a grasshopper. He is one of the Deluxe Insecticons.

Rapido,

Autobot. Transforms into a car. He is one of the Axelerators.

Ratbat,

Decepticon. Transforms from bat into a cassette. He is one of the Spy Cassettes.

Ratchet,

Autobot. Transforms into an ambulance. He is one of the Autobot Vehicles.

Rattrap,

Maximal. Comes from the Beast Wars. Transforms into a rat.

Rattrap,

Maximal. Comes from the Beast Wars. He is a Transmetal Figure, transforms into a rat or a dragster-like vehicle.

Ravage,

Decepticon. Transforms from jaguar into a cassette. He is one of the Spy Cassettes.

Razorbeast,

Maximal. Comes from the Beast Wars. Transforms into a wild boar.

Razorclaw,

Decepticon. Transforms into a lion. He is the leader of the Predacons.

Razorclaw,

Predacon. Comes from the Beast Wars. Transforms into some sort of fish-like creature.

Recoil,

Nebulon. Transforms into the weapon of Kup.

Red Alert,

Autobot. Transforms into a firebrigade car. He is one of the Autobot Vehicles.

Red Hot,

Autobot micromaster. Transforms into a firebrigade car. He is a member of the Rescue Patrol.

Reflector,

Decepticon. Three Transformers who can combine together to form a camera.

Repugnus,

Autobot. Transforms into a monster. He is one of the Monsterbots.

Rescue Force,

Group of four Autobots from the second generation. One transforms into a jet, one into a racecar, the other two into some futuristic machines. You can find a picture of these Transformers in the dutch brochure of 1992.

Rescue Patrol,

Autobot Micromasters. This is one of the Micromaster Patrols. The group is formed by:
Fixit
Red Hot
Seawatch
Stakeout

Retro,

Autobot Micromaster. Transforms together with Surge into a construction vehicle. Together they operate the Missile Launcher.

Rev,

Nebulon. Transforms into the engine of Getaway.

Rewind,

Autobot. Transforms from robot into a cassette. He is one of the Mini-Cassettes.

Rhinox,

Maximal. Comes from the Beast Wars. Transforms into a rhinoceros.

Rhinox,

Maximal. Comes from the Beast Wars. He is a Transmetal Figure, transforms into a rhinoceros or a halftrack/tank vehicle.

Ricochet,

Nebulon. He and Boomer transform into the weapons of Quickmix.

Rippersnapper,

Decepticon. Transforms into a monster. He is one of the Terrorcons.

Roadblock,

Decepticon. He is one of the Ultra Pretenders.

Roadblock,

Decepticon from the second generation. Transforms into a construction vehicle. He is one of the two Autorollers.

Road Burner,

Autobot Micromaster. Transforms together with Wheel Blaze into a construction vehicle. He is a member of the Metro Squad. (Special thanks to Victor Hopmans for scanning this picture.)

Roadbuster,

Autobot. Transforms into a jeep. He is one of the Deluxe Vehicles.

Roadgrabber,

Decepticon. Transforms into a plane. He is a Pretender Vehicle.

Roadhandler,

Autobot micromaster. Transforms into a car. He is a member of the Race Car Patrol.

Road Hugger,

Decepticon micromaster. Transforms into a car. He is a member of the Sports Car Patrol.

Road Pig,

Decepticon from the second generation. Transforms into motor. He is one of the Lasercycles.

Roadraider,

Decepticon. Transforms into a car. He is one of the Trakkons.

Road Rocket,

Autobot from the second generation. Transforms into motor. He is one of the Lasercycles.

Robosmasher,

Device of Megatron. He used it to reprogram other Transformers into his followers. The Constructicons were reprogrammed by the Robosmasher. In the end Omega Supreme was able to destroy the device.

Rodimus Convoy,

Autobot. In the Japanese series Hot Rod gets the Matrix again and changes to Rodimus Convoy.

Rodimus Prime,

Autobot Hero. He is the leader of the Autobots. In The Movie Hot Rod was able to take the Matrix from Galvatron (who had gotten it earlier from Ultra Magnus.). The power of the Matrix changed Hot Rod into Rodimus Prime. Later in the series Optimus Prime got the Matrix back and Rodimus Prime became Hot Rod again. (Optimus Prime became Autobot Leader again.)

Rollbar,

Autobot. Transforms into a jeep. He is one of the Throttlebots.

Roller,

Little car, is a part of Optimus Prime.

Roller Force,

Decepticon Micromaster. Transforms into a race car. He is a member of the Decepticon Race Track Patrol.

Rollout,

Autobot Actionmaster. His weapon transforms into a little droid.

Rotorbots,

Group of four Transformers. They are all equiped with a rotor launcher. Their names are:
Blade, Decepticon
Blitz, Decepticon
Hot Foot, Autobot
Piranha, Autobot

Rotorstorm,

Autobot. Transforms into an helicopter. He is one of the Turbomasters.

Roughstuff,

Decepticon Micromaster. Transforms into a truck. His trailer transforms into a jet. He is one of the Micromaster Transports.

Ruckus,

Decepticon. Transforms into a car. He is one of the Triggercons.

Rumble,

Decepticon. Transforms from robot into a cassette. He is one of the Spy Cassettes.

Rumbler,

Autobot Actionmaster. His vehicle can transform into his exosuit.

Runabout,

Decepticon. Transforms into a car. He is one of the Battle Springers.

Runamuck,

Decepticon. Transforms into a car. He is one of the Battle Springers.

Rush,

Autobot. Transforms into a car. He is one of the Axelerators.