Saber (1989 - Victory - Japan)
Saberback (1999 - Beast Wars Neo - Japan)
Safeguard (2005 - Mini-Con - Cybertron / Galaxy Force)
Safety (1992 - Guard City - Japan)
Salt-Man X (1985 - South America)
Salt-Man Z (1985 - South America)
Salvo (2004 - Insecticon - Japan)
San Diego (1992 - Sixtrain)
Sandstorm (1986 - G1 Triple-changer)
Sandstorm (1992 - Battle Gaia - Japan)
Sandstorm (1997 - Machine Wars)
Sandstorm (1999 - BotCon)
Santon (1998 - Beast Wars 2 - Japan)
Scamper (1986 - G1)
Scarem (1999 - Transmetal 2)
Scattershot (1987 - G1 Technobot)
Scattor (2003 - Armada Night Attack Mini-Con Team)
Scattor (2004 - Energon Mini-Con Team)
Scattorshot (2005 - Cybertron / Galaxy Force)
Scavenger (1985 - G1 Constructicon)
Scavenger (1992 - G2 Constructicon - yellow)
Scavenger (1992 - G2 Constructicon - orange)
Scavenger (1998 - Transmetal)
Scavenger (2000 - Beast Machines)
Scavenger (2002 - RiD)
Scavenger (2002 - Armada)
Scavenger (2004 - Universe)
Scissorboy (1998 - Beast Wars 2 - Japan)
Scoop (1988 - G1 Targetmaster)
Scorch (1992 - G2 Turbomaster - Europe/Japan)
Scorpia (1993)
Scorponok (1987 - G1 Headmaster)
Scorponok (1996 - Beast Wars)
Scorponok (1998 - Happy Meal)
Scorponok (2004 - Energon)
Scorpulator (1990 - G1 Action Master)
Scourge (1986 - G1)
Scourge (1987 - G1 Targetmaster)
Scourge (1999 - Transmetal)
Scourge (2002 - RiD)
Scourge (2002 - RiD Spychanger)
Scourge (2003 - RiD Destructicon)
Scowl (1989 - G1 Pretender)
Scrapper (1985 - G1 Constructicon)
Scrapper (1992 - G2 Constructicon - yellow)
Scrapper (1992 - G2 Constructicon - orange)
Screech (1991 - G1 Actionmaster - Europe)
Scuba (1998 - Beast Wars 2 - Japan)
Scylla (1998 - Beast Wars 2 - Japan)
Sea Clamp (1997 - Beast Wars)
Sea Mini-Con Team (2003)
Sea Mini-Con Team 2 (2003)
Sea Phantom (1998 - Beast Wars 2 - Japan)
Searchlight (1987 - G1 Throttlebot)
Seasaur (1999 - Beast Wars Neo - Japan / 2000 - Beast Machines Dinobot)
Seaspray (1985 - G1)
Seaspray (1993 - G2)
Seawatch (1989 - G1 Micromaster Rescue Patrol)
Seawing (1988 - G1 Seacon)
Sedan (1985 - G1 - South America - green)
Sedan (1985 - G1 - South America - blue)
Sedan (1985 - G1 - South America - white)
Sedan (1985 - G1 - South America)
Seizan (1987 - Trainbot - Japan)
Shadow Panther (1997 - Beast Wars - Japan)
Shadow Striker (2003 - Universe)
Shadowjet (1992 - G1 Operation: Combination - Japan)
Sharkticon (2004 - Energon)
Shokaract (2000 - BotCon)
Shockblast (2004 - Energon)
Shockwave (1985 - G1)
Shockwave (1990 - G1 Action Master)
Shockwave (2003 - Micron Legend - Japan)
Shothole (2004 - Insecticon - Japan)
Shotbomber (1991 - Japan)
Shouki (1987 - Trainbot - Japan)
Shrapnel (1985 - G1 Insecticon)
Shuffler (1987 - G1 Headmaster Nebulan - Japan)
Shuttle Gunner (1992 - Battle Gaia - Japan)
Shuttler (2000 - Car Robots - Japan)
Side Burn (2001 - RiD)
Side Burn (2001 - RiD Spychanger)
Side Burn (2002 - Super)
Side Burn (2003 - Armada Mini-Con)
Side Burn (2004 - Universe)
Sidetrack (1989 - G1 Micromaster Battle Patrol)
Sidetrack (1990 - Zone - Japan)
Sideways (2002 - Armada)
Sideways (2002 - RiD)
Sideswipe (1984 - G1)
Sideswipe (1991 - G1 Action Master - Europe)
Sideswipe (1992 - G2)
Sideswipe (1995 - G2 Go-Bot)
Sideswipe (2001 - RiD Spychanger)
Sideswipe (2003 - Armada)
Sideswipe (2003 - Universe)
Sideswipe (2003 - WSTF - Japan)
Sideswipe (2004 - Alternator)
Sights (1990 - G1 Action Master)
Signal Flare (2004 - Energon)
Silencer (1988 - G1 Nebulan Targetmaster)
Sireen (1992 - Sixturbo - Japan)
Siren (1988 - G1 Headmaster)
Silverbolt (1986 - G1 Aerialbot)
Silverbolt (1994 - G2 Aerialbot)
Silverbolt (1997 - Beast Wars)
Silverbolt (1998 - Beast Wars - Fuzor)
Silverbolt (2000 - Beast Machines)
Silverbolt (2003 - Universe)
Silverstreak (2003 - CS III)
Silverstreak (2004 - Spychanger)
Silverstreak (2004 - Alternator)
Singe (1988 - G1 Nebulan Targetmaster)
Sinnertwin (1987 - G1 Terrorcon)
Sirus (1993 - G2)
Six-Gun (1986 - G1)
Six Speed (2005 - Cybertron Mini-Con)
Sixknight (1988 - G1 - Japan)
Sixbuilder (1992 - Micromaster - Japan)
Sixliner (1991 - Micromaster - Japan)
Sixtrain (1992 - Micromaster - Japan)
Sixshot (1987 - G1)
Sixshot (2005 - Energon)
Sixturbo (1992 - Sixturbo - Japan)
Sixwing (1992 - Micromaster - Japan)
Sizzle (1988 - G1 Sparkabot)
Sizzle (1994 - G2 Illuminator)
Sizzle (1994 - G2 - Europe)
Skalor (1988 - G1 Seacon)
Skar (1988 - G1 Nebulan Powermaster)
Skids (1985 - G1)
Skids (2004 - Comemmorative Series VIII)
Skids (2005 - Galaxy Force)
Skids (2006 - Alternator)
Skid-Z (2001 - RiD)
Skid-Z (2003 - Armada Mini-Con)
Skram (1993 - G2)
Skullcruncher (1987 - G1 Headmaster)
Skullgrin (1988 - G1 Pretender)
Sky Blast (2002 - Armada Space Mini-Con Team)
Sky Blast (2004 - Energon Space Mini-Con Team)
Sky Boss (2002 - Armada Race Mini-Con Team)
Sky Byte (2001 - RiD)
Sky Dasher (1985 - G1 Powerdasher)
Sky Garry (1991 - Japan)
Sky High (1988 - G1 Pretender)
Sky High (1990 - G1 Micromaster Air Patrol)
Sky Lynx (1986 - G1)
Sky Shadow (1998 - Beast Wars - Fuzor)
Sky Shadow (2005 - Energon)
Skyblast (2004 - Energon)
Skyboom (2003 - Armada Road Assault Mini-Con Team)
Skyboom (2004 - Energon Mini-Con Team)
Skydive (1986 - G1 Aerialbot)
Skydive (1992 - Predator - Europe)
Skydive (1994 - G2 Aerialbot)
Skydive (2000 - Beast Machines)
Skydive (2004 - Universe)
Skyfall (1990 - G1 Action Master)
Skyfire (2001 - RiD)
Skyhammer (1989 - G1 Pretender)
Skyhopper (1989 - G1 Micromaster)
Skyhyper (1990 - Zone - Japan)
Skyjack (1995 - G2 Cyberjet)
Skyquake (1992 - Predator - Europe)
Skysaur (1999 - Beast Wars Neo - Japan / 2000 - Beast Machines Dinobot)
Skystalker (1989 - G1 Micromaster)
Skywarp (1984 - G1)
Skywarp (1997 - Machine Wars)
Skywarp (1998 - Beast Wars 2 - Japan)
Skywarp (2001 - HoC)
Skywarp (2003 - Armada)
Skywarp (2003 - CS IV)
Skywarp (2004 - Energon)
Skywarp (2005 - Cybertron / Galaxy Force)
Slag (1985 - G1 Dinobot)
Slag (1992 - G2 Dinobot)
Slag (1993 - G2 Dinobot - red)
Slag (1993 - G2 Dinobot - green)
Slog (1989 - G1 Pretender)
Slamdance (1988 - G1)
Slammer (1986 - G1)
Slapdash (1988 - G1 Powermaster)
Slapper (2001 - RiD)
Slapper (2003 - Armada)
Sledge (1990 - G1 Micromaster Constructor Squad)
Sledge (2005 - Energon)
Slicer (1991 - G1 - Europe)
Slide (1990 - G1 Micromaster Metro Squad)
Sling (1999 - Beast Wars Neo - Japan)
Slingshot (1986 - G1 Aerialbot)
Slingshot (1994 - G2 Aerialbot)
Slow Poke (1990 - G1 Micromaster Monster Truck Patrol)
Sludge (1985 - G1 Dinobot)
Sludge (2003 - Armada Dinobot)
Slugfest (1987 - G1)
Slugslinger (1987 - G1 Targetmaster)
Slugslinger (2004 - Energon)
Smokejumper (2003 - RiD)
Smokescreen (1985 - G1)
Smokescreen (1994 - G2)
Smokescreen (2002 - Happy Meal)
Smokescreen (2002 - Armada)
Smokescreen (2003 - CS VI)
Smokescreen (2004 - Alternator)
Snap Trap (1988 - G1 Seacon)
Snapdragon (1987 - G1 Horrorcon Headmaster)
Snapper (1996 - Beast Wars)
Snare (1992 - Predator - Europe)
Snarler (1988 - G1 Pretender)
Snarl (1985 - G1 Dinobot)
Snarl (1990 - G1 Action Master)
Snarl (1992 - G2 Dinobot)
Snarl (1993 - G2 Dinobot - red)
Snarl (1993 - G2 Dinobot - green)
Snarl (1997 - Beast Wars)
Snarl (2000 - Beast Machines)
Snarl (2003 - Armada Dinobot)
Snarl (2003 - Universe)
Snipe (1993 - Skyscorcher - Europe)
Snow Cat (2004 - Energon)
Sonar (1999 - Transmetal)
Sonar (2002 - Armada Air Defense Mini-Con Team - white)
Sonar (2003 - Armada Air Defense Mini-Con Team - black)
Sonic (1990 - Zone Micromaster - Japan)
Sonic Attack Jet (2000 - Beast Machines)
Sonic Bomber (1990 - Zone Powered Master - Japan)
Soundblaster (1987 - G1 - Japan)
Soundblaster Jr. (1987 - G1 Junior Series - Japan)
Soundwave (1984 - G1)
Soundwave (1990 - G1 Action Master)
Soundwave (1995 - G2 Go-Bot)
Soundwave (1997 - Machine Wars)
Soundwave (2000 - Mutant Beast Wars)
Soundwave (2003 - HoC)
Soundwave (2004 - Universe)
Soundwave (2006 - Cybertron)
Soundwave Jr. (1987 - G1 - Japan)
Space Case (1995 - G2 Cyberjet)
Space Case (2004 - Universe Cyberjet)
Space Mini-Con Team (2002 - Armada)
Space Mini-Con Team (2004 - Energon)
Spaceshot (1990 - G1 Micromaster)
Spark (1991 - Sixliner - Japan)
Spark (1993 - Obliterator - Europe)
Sparkplug (2002 - Armada Mini-Con)
Sparkrider (1992 - Guard City - Japan)
Sparkstalker (1988 - G1 Firecon)
Sparkstalker (1994 - G2 - Europe)
Spasma (1987 - G1 Nebulan Headmaster)
Spectro (1986 - G1)
Speed-Bot (2005 - Go-Bots)
Speedbreaker (2000 - Car Robots - Japan)
Speedbreaker (Super) (2000 - Car Robots - Japan)
Speedbreaker (Stealth) (2000 - Car Robots - Japan)
Speeder (1990 - Zone Micromaster - Japan)
Speedstream (1993 - Aquaspeeder - Europe)
Spike (1987 - G1 Nebulan Headmaster)
Spike (2004 - HoC)
Spinner (1991 - Micromaster - Japan)
Spinister (1988 - G1 Targetmaster)
Spinroad (1992 - G1 Operation: Combination - Japan)
Spiral (2002 - Armada Street Speed Mini-Con Team)
Spittor (1997 - Beast Wars)
Spittor (1998 - Transmetal - Europe)
Spittor (1999 - Transmetal 2)
Splashdown (1988 - G1 Pretender)
Spoilsport (1987 - G1 Nebulan Targetmaster)
Sports Car Patrol (1989 - G1)
Springer (1986 - G1 Triple-changer)
Sprocket (1990 - G1 Action Master)
Spy Glass (1986 - G1)
Spy Streak (2001 - Beast Machines)
Squawkbox (1988 - G1)
Squawktalk (1988 - G1)
Squeezeplay (1988 - G1 Headmaster)
Stakeout (1989 - G1 Micromaster Rescue Patrol)
Stalker (1992 - Predator - Europe)
Stampy (1999 - Beast Wars Neo - Japan)
Star Convoy (1991 - Zone Micromaster Base - Japan)
Star Saber (1989 - Victory - Japan)
Star Saber (2002 - Armada Air Defense Mini-Con Team)
Star Saber Jr. (1988 - G1 - Japan)
Starscream (1984 - G1)
Starscream (1989 - G1 Legends)
Starscream (1989 - G1 Pretender)
Starscream (1990 - G1 Action Master)
Starscream (1992 - G2)
Starscream (1997 - Machine Wars)
Starscream (1998 - Beast Wars 2 - Japan)
Starscream (2001 - HoC)
Starscream (2002 - Armada)
Starscream (2002 - Happy Meal)
Starscream (2002 - CS II)
Starscream (2003 - WSTF - Japan)
Starscream (2004 - Energon)
Starscream (2004 - HoC w/ Crown)
Starscream (2004 - Sam's Club Energon)
Starscream (2005 - Energon)
Starscream (Future King) (2005 - Japan)
Staxx (1995 - G2 Powermaster - Europe)
Stealth Assault (1994 - G2 - Europe)
Steamhammer (2005 - Energon)
Steeljaw (1986 - G1)
Stepper (1987 - Targetmaster - Japan)
Stinkbomb (1999 - Transmetal 2)
Stockade (2004 - Universe)
Stonecruncher (1990 - G1 Micromaster Constructor Squad)
Stormcloud (1989 - G1 Micromaster Air Strike Patrol)
Stormcloud (2003 - Armada Sea Mini-Con Team - maroon)
Stormcloud (2003 - Armada Sea Mini-Con Team - blue)
Stormcloud (2005 - Energon)
Storm Jet (2002 - RiD)
Storm Jet (2005 - Energon)
Strafe (1987 - G1 Technobot)
Strafe (1995 - G2 Cyberjet)
Stranglehold (1989 - G1 Pretender)
Stratotronic (1990 - G1 Action Master)
Street Action Mini-Con Team (2002 - Armada)
Street Action Mini-Con Team (2004 - Universe)
Street Speed Mini-Con Team (2002 - Armada)
Street Speed Mini-Con Team 2 (2003 - Armada)
Streetstar (1992 - Guard City - Japan)
Streetwise (1986 - G1 Protectobot)
Streetwise (1994 - G2 Protectobot - unreleased)
Streetwise (2004 - Universe Protectobot)
Strikedown - G1 Micromaster Metro Squad)
Strika (2001 - Beast Machines)
Striker (2000 - Dinobot)
Striker (2003 - Armada Dinobot)
Strongarm (2004 - Energon Omnicon)
Strong-Bot (2005 - Go-Bots)
Stylor (1987 - G1 Nebulan Headmaster)
Stylor Jr. (1987 - Junior Series - Japan)
Submarauder (1988 - G1 Pretender)
Suiken (1987 - Trainbot - Japan)
Sunbeam (1988 - G1 Nebulan Targetmaster)
Sunrunner (1989 - G1 Micromaster Battle Patrol)
Sunrunner (1990 - Zone - Japan)
Sunstorm (2003 - BotCon HoC)
Sunstorm (2004 - Universe)
Sunstreaker (1984 - G1)
Sunstreaker (2003 - Universe)
Sunstreaker (2006 - Alternator)
Sunstreaker Jr. (1986 - G1 - Japan)
Super Car Patrol (1990 - Zone - Japan)
Super Fire Convoy (2000 - Car Robots - Japan)
Super Ginrai (1988 - G1 - Japan)
Super Ginrai (2002 - Fire Guts - Japan)
Super Ginrai Jr. (1988 - G1 - Japan)
Super Mach Alert (2000 - Car Robots - Japan)
Super Speedbreaker (2000 - Car Robots - Japan)
Super Wild Ride (2000 - Car Robots - Japan)
Super Sonic (1992 - Sixwing - Japan)
Superion (1986 - G1 Aerialbot gestalt)
Superion (1994 - G2 Aerialbot gestalt)
Superion Maximus (2005 - Energon)
Surge (1990 - G1 Micromaster Missile Launcher Transport)
Sureshock (2002 - Armada Street Action Mini-Con Team)
Sureshock (2004 - Energon Perceptor Mini-Con Team)
Sureshock (2004 - Universe Street Action Mini-Con Team)
Sureshot (1987 - G1 Targetmaster)
Sureshot (1993 - Europe)
Survive (1999 - Beast Wars Neo - Japan)
Swerve (1986 - G1)
Swerve (2004 - Universe)
Swerve (2005 - Alternator)
Swerve (2006 - Cybertron)
Swindle (1986 - G1 Combaticon)
Swindle (1994 - G2 Combaticon)
Swindle (2002 - Armada Mini-Con)
Swindle (2005 - Alternator)
Swindler (1988 - G1 Micromaster Race Car Patrol)
Swoop (1985 - G1 Dinobot)
Swoop (2003 - Armada Dinobot)