Here you can see a list of taken / available characters in the game.
Updated April 8th - Deva Autobots HIGH COMMAND
Optimus Prime-----The J Writer
Fortress Maximus----Longshot
Ultra Magnus-----Stone
Grimlock-----Devastron
AERIALBOTS
Silverbolt-----sumowrestler
Air Raid-----
Fireflight-----
Skydive-----The J Writer
Slingshot-----
PROTECTOBOTS
Hot Spot-----
Blades-----
First Aid-----
Groove-----
Streetwise-----.op.
TECHNOBOTS
Scattershot-----Windcharger
Afterburner-----
Lightspeed-----
Nosecone-----
Strafe-----Bluestatic
DINOBOTS
Grimlock-----Devastron
Slag-----FuzzymusPrime
Sludge-----Optimus Frimal
Snarl-----Smokescreen GT
Swoop-----Tasbirk
FEMME FATALES
Elita-1-----Ember
Arcee-----Stone
Chromia-----
Firestar-----
Moonracer-----
HEADMASTERS
Brainstorm-----
Chromedome-----
Hardhead-----
Highbrow-----
Hosehead-----
Minerva-----
Nightbeat-----
Siren-----
MONSTERBOTS
Doublecross-----
Grotesque-----
Repugnus-----.op.
POWER MASTERS
Getaway-----Stone
Joyride-----
Slapdash-----
PRETENDERS
Catilla-----
Chainclaw-----
Cloudburst-----
Crossblades-----
Doubleheader-----
Groundbreaker-----
Gunrunner-----
Landmine-----
Longtooth-----
Pincher-----
Skyhammer-----
Sky High-----
Splashdown-----
Waverider-----
Vroom-----
TARGETMASTERS
Blurr-----BlackDiamond
Crosshairs-----
Landfill-----
Point Blank-----
Quickmix-----
Scoop-----.op.
Sureshot-----NPC (*Silverblade)
THROTTLEBOTS
Chase-----VkmSpouge
Freeway-----VkmSpouge
Rollbar-----VkmSpouge
Searchlight-----VkmSpouge
Wideload-----VkmSpouge
OTHER G1/G2 AUTOBOTS
Backstreet-----
Beachcomber-----
Blaster-----
Bluestreak-----Smokescreen GT
Brawn-----~Windcharger~
Broadside-----
Bumblebee-----Ember
Bumper-----
Cliffjumper-----
Cloudraker-----
Cosmos-----
Dogfight-----
Eject-----NPC
Fastlane-----
Fizzle-----
Grand Slam----- NPC
Gears-----
Grapple-----
Guzzle-----
Hoist-----
Hot Rod-----Ember
Hound-----Roadbuster
Hubcap-----
Huffer-----
Inferno-----
Ironhide-----Optimus Frimal
Jackpot-----
Jazz-----~Windcharger~
Jetfire-----
Kick-Off-----
Kup-----The J Writer
Mainframe-----
Mirage-----The J Writer
Outback-----
Override-----
Over-Run-----
Perceptor-----FuzzymusPrime
Pipes-----
Powerglide-----
Prowl-----Longshot
Punch/Counterpunch-----
Quickswitch----- N/A
Rad-----
Raindance-----NPC
Ramhorn -----NPC
Ratchet-----Insidious
Red Alert-----
Rewind-----NPC
Roadbuster-----
Rollout-----
Sandstorm-----
Seaspray-----
Sideswipe-----Ember
Sizzle-----
Skids-----
Skyfall-----
Sky Lynx-----N/A
Smokescreen-----
Springer-----*Silverblade
Sprocket-----
Steeljaw-----NPC
Sunstreaker-----The J Writer
Swerve-----sumowrestler
Tailgate-----
Topspin-----
Tracks-----
Trailbreaker-----NPC
Twin Twist-----
Warpath-----
Wheelie-----
Wheeljack-----
Whirl-----
Windbreaker -----
Windcharger-----~Windcharger~
Wreck-Gar-----N/A
Decepticons HIGH COMMAND
Megatron-----Devastron
Shockwave-----Insidious
Scorponok-----Devastron
COMBATICONS
Onslaught-----Longshot
Blast-Off-----Jaam
Brawl-----
Swindle-----FuzzymusPrime
Vortex-----
CONSTRUCTICONS
Scrapper-----FuzzymusPrime
Bonecrusher-----
Hook-----Optimus Frimal
Long Haul-----
Mixmaster-----
Scavenger-----
MONSTERCONS
Slog------
Birdbrain-----
Bristleback------
Icepick-----
Scowl------
Wildfly-----
Monstructor-----
PREDACONS
Razorclaw-----Stone
Divebomb-----
Headstrong-----
Rampage-----Stormshadow
Tantrum-----
SEACONS
Snaptrap-----
Nautilator-----
Overbite------
Seawing-----
Skalor-----
Tentakil------
STUNTICONS
Motormaster-----Cryhavok
Breakdown-----*Silverblade
Dead End-----Longshot
Drag Strip-----
Wildrider-----Insidious
TERRORCONS
Hun-grrr-----Devastron
Cutthroat-----
Sinnertwin-----
Blot-----
Rippersnapper-----
HEADMASTERS
Fangry-----
Horri-Bull------
Squeezeplay------
Mindwipe-----Tasbirk
Skullcruncher-----NPC (Devastron)
Weirdwolf-----The J Writer
HORRORCONS
Apeface-----
Snapdragon-----
INSECTICONS
Barrage-----
Bombshell-----NPC (Ember)
Chop Shop-----The Chaos Bringer
Kickback-----
Ransack-----NPC (The J Writer)
Shrapnel-----Devastron
Venom-----JaAm
POWERMASTERS
Darkwing-----Devastron
Dreadwind-----Devastron
PRETENDERS
Thunderwing-----Tasbirk
Bludgeon-----Darth Vegeta
Bomb-Burst-----Kid Kapitalism
Bugly-----Rebel Raven
Carnivac-----
Finback-----
Iguanus----
Octopunch-----Rebel Raven
Roadblock-----The J Writer
Roadgrabber-----
Skullgrin-----
Snarler-----
Stranglehold-----
Submarauder-----
SEEKERS
Starscream-----Longshot
Skywarp-----*Silverblade
Thundercracker-----~Windcharger~
Ramjet-----Axiom Scion
Dirge-----NPC (Axiom Scion)
Thrust-----NPC (Axiom Scion)
Sunstorm-----Insidious
Quantum-----Luciferus
Cobalt-----
Amethyst-----
Firebat-----
Mindfreak-----
Headgame-----
Jadewind-----
Solarstrike-----
Stormchill-----
Riptide-----
Snowcap-----
Tremor-----
Tsunami-----
Hellion-----
Ghost-----*Silverblade
Nightraven-----
Dragonfly-----
Apache-----
Osprey-----
Dunehopper-----The J Writer
SWEEPS
Macabre----~Windcharger~
Carnage----Jaam
Discord----Rebel Raven
Strife----
Rage----Rebel Raven
Rot----
Toil----
Torment----
Turmoil----The Chaos Bringer
TARGETMASTERS
Misfire-----
Needlenose-----
Quake-----
Slugslinger-----
Spinister-----
Triggerhappy-----Optimus Frimal
OTHER G1/G2 DECEPTICONS
Astrotrain-----
Axer-----
Banzai-Tron-----FuzzymusPrime
Battletrap-----
Beastbox-----NPC
Blitzwing-----*Silverblade
Buzzsaw-----NPC
Cindersaur-----
Clench-----Cryhavok
Crankcase-----
Cyclonus-----Insidious
Flamefeather-----
Flywheels------
Frenzy-----NPC
Gutcruncher-----
Krok-----
Laserbeak-----NPC
Octane-----
Overkill-----NPC
Pounce-----
Ratbat-----
Ravage-----NPC
Reflector-----Insidious
Ruckus-----Longshot
Rumble-----NPC
Scourge-----Fuzzymus Prime
Sixshot-----Devastron
Slugfest-----NPC
Soundwave-----The J Writer
Sparkstalker-----
Squawktalk-----NPC
Treadshot-----
Windsweeper------
Wingspan-----