Jack - Micron
Jack (Galaxy Force) - Micron
Jackpot - Autobot Strategist
Jake (Grizzly) - Animorph
Jake (Shark) - Animorph
Jake (Tiger) - Animorph
Jake (Tri-Rex) - Animorph
Jaruga - Autobot
Jaruga - Destron Cybernetics Soldier
Javil - Destron Fire Destruction
Jawbreaker - Maximal Close-combat Specialist
Jazz - Autobot Special Operations Agent
Jazz - Autobot Decoy #13
Jazz (Pretender) - Autobot Special Operations / Saboteur
Jazz (Action Master) - Autobot Special Operations
Jazz (Generation 2) - Autobot Special Operations Agent
Jazz (Electrum) - Cybertron Special Ops. Agent
Jazz (Commemorative Series III) - Autobot Special Ops. Agent
Jazz (Spychanger)- Autobot Special Operations Expert
Jazz (Smallest TF) - Cybertron
Jet - Autobot
Jetfire - Autobot Air Guardian
Jetfire (Cyberjet) - Autobot Air Guardian
Jetfire (Armada) - Autobot
Jetfire (Built To Rule) - Autobot
Jetfire (Powerlinx) - Autobot
Jetfire (Energon) - Autobot
Jetfire (Cybertron) - Autobot
Jetfire (Burger King) - Autobot
Jetfire (Legends of Cybertron) - Autobot
Jetstorm - Autobot Strategy Expert
Jetstorm - Decepticon Co-Ordinator
Jetstorm - Predacon Sky Patrol
Jetstorm - Vehicon Aerodrone General
Jetstorm (McDonald's) - Vehicon
Jetstorm (Ultra) - Vehicon Aerodrone General
Jetstorm - Mini-Con
Jetstorm (Air Assault) - Mini-Con
Jetter (CD) - Micron
Jetter (X-Dimension) - Micron
Jetter (Change Micron) - Micron
Jetter (Micron Booster) - Micron
Jhiaxus - Decepticon Air Space Commander!
Jiiku (Overdrive Edition) - Micron
Jipe - Decepticon
Joe - Cybertron
Joe (Reissue) - Cybertron
Jolt - Decepticon Sneak Attack Specialist
Jolt - Mini-Con
Jolt (Powerlinx) - Mini-Con
Jolt (Built To Rule) - Mini-Con
Jolt (Cybertron) - Mini-Con
Joyride -Autobot Warrior
Junk (X-Dimension) - Micron
Junko - Cybertron