Season 1

17. Autobot Spike
Sparkplug creates Autobot X out of spare parts. The robot goes crazy during its first test and is put into storage. Later, Spike gets badly injured in a firefight with the Decepticons. To save his life, the Autobots transfer his mind into Autobot X so the doctors can operate on his body. With an unstable mind and Megatron's goading, Autobot Spike turns against the Autobots, but relents when he nearly kills Sparkplug. Spike's body makes it through the operation, and Spike's mind is returned to it.

18. Changing Gears
Normally grouchy Gears is abducted by the Decepticons and Megatron steals his personality cartridge to use in his latest plot, making Gears friendly to them. The Autobots must stop the Decepticons from using a space needle from penetrating and destroying Earth's sun and they retrieve Gears' component, making everybody except Gears happy.

19. City of Steel
New York City is rebuild by Megatron into a steel city. Optimus Prime is captured and disassembled. The Autobots locate his pieces scattered throughout the city.

20. Attack of the Autobots
Megatron alters the Autobots' rechargers to change the Autobots to evil. Jazz and Bumblebee (who did not recharge) and Sparkplug, work to restore the Autobots and prevent Megatron from stealing a solar power satellite. After restoring the Autobots to good, Jazz shatters the Decepticons' escape rocket with a musical sonic boom, and their plot to return to Cybertron with the satellite is thwarted.

21. Traitor
The Decepticons capture an unstable power source (electrocells) and seek to exploit them, with the Insecticons' help. Mirage's plan to turn the Insecticons and Decepticons against one another backfires when he is mind-controlled by Bombshell. Under the Insecticon's influence he leads the Autobots into a trap. Ratchet removes Bombshell's cerebro shell and learns the truth, however. In a final battle with Megatron, the electrocells are destroyed.

22. The Immobilizer
Wheeljack has created the Immobilizer, a new weapon that can temporarily stop any Transformer in its tracks. The Decepticons manage to steal it partly due to Carly (first appearance) distracting Ironhide from his lookout post. During the battle which follows, Ironhide rescues Carly from the Decepticons, but they have made the Immobilizer's affect permanent and start immobilizing Autobots left and right. With the assistance of Brawn and Jazz, Spike and Carly manage to reverse the effects of the Immobilizer and save the Autobots. The Immobilizer is then destroyed.

*23. The Autobot Run
The Autobots participate in a stunt show and race for charity, but the Decepticons employ a device to lock them into their vehicle modes. Alerted by Hound, the few Autobots not present at the charity race work to free their friends.

*24. Atlantis, Arise!
Atlantis is risen from the ocean by the Decepticons and the inhabitants plan to take over the Transformers and Washington, D.C.

*25. Day of the Machines
Megatron reprograms Torq III, a supercomputer, to obey him. He uses it to control oil tankers, and direct them to a platform under his control. Optimus Prime destroys the computer; the Autobots attack the platform, and escape as it self-destructs.

*26. Enter the Nightbird
The Decepticons, working out of a desert base, steal an experimental female ninja robot named Nightbird, and use her to steal the Autobots' computer chip containing information on the world's energy sources. She succeeds in stealing the chip from the Ark, but is confronted and trapped by the Autobots. The Decepticons come to her aid, but she is ambushed by the jealous Starscream. The Decepticons chase after the fleeing Starscream, leaving Nightbird and the chip with the Autobots.

27. A Prime Problem
The Decepticons discover a chasm full of crystals that destroy machinery, and they create a machine that can duplicate Transformers. The Decepticons duplicate Optimus Prime and confuse the Autobots as to who is the real Prime. The Autobots and Decepticons fight near the chasm, and the duplicated Prime destroys a duplicated Starscream to further confuse the Autobots. The Autobots are just about ready to follow the fake Prime into the chasm when he (controlled by Megatron) breaks the masquerade by not showing any concern for Spike's welfare. The Autobots knock the fake Prime into the chasm, and the fake Prime is destroyed. The Decepticons abandon their desert base in this episode.

28. The Core
Megatron constructs a drill to reach the center of the Earth and tap the energy there, despite Starscream's warnings that this will destroy the planet. The Autobots, meanwhile, have come up with a way to control Devastator. In their attack on the drill, however, Megatron activates a countermeasure. The conflicting signals cause Devastator to go berzerk; only by cooperating are the Autobots and Decepticons able to control him again. Devastator destroys the drill, and the earth is safe.

29. The Insecticon Syndrome
The Autobots and the Insecticons engage in battle in a forest where the Insecticons are eating the trees. After beating the Autobots, the Insecticons, along with the Decepticons go to a base containing a power source which the Insecticons feed on which turns them into big bugs, also making them very unstable. In the process, they kidnap Soundwave and turn him into their slave (thanks to one of Bombshell's cerebro shells) and badly damage Wheeljack and Ironhide, which forces the Autobots to retreat. Soon, Megatron and Starscream realize that Soundwave and all the other Decepticons are under Insecticon control. Bombshell launches two cerebro shells, one hits Starscream and he becomes controlled, but Megatron crushes the other one before it hits him. Prime warns Megatron that any blast that hits one of the Insecticons could destroy them all. The Autobots create 3 antidotes to prevent this from happening. Megatron is forced to work with the Autobots and transforms to fire the antidotes. Bombshell and Kickbackare saved and return to normal size, but Shrapnel explodes before the antidote put in him by Spike can work. The Decepticons are freed from Insecticon control and Bombshell reassembles Shrapnel. The Insecticons retreat with the Decepticons chasing them.

30. Dinobot Island Part 1
Powerglide and Bumblebee discover a prehistoric island filled with dinosaurs. The Dinobots destructive fighting tactics end up causing harm and havoc to the Autobots during a demonstration. As a result, Prime orders the Dinobots to be secluded on an island where they will train to better control themselves in combat, and to be able to work better as a group when they fight. The Decepticons find out about the island and want to tap the many natural resources for power. Megatron eventually learns of this, and then discovers that the island is rich in energy. The Decepticons arrive on the island and proceed to turn the energy into energon cubes. They confronted by the Dinobots, and Megatron stampedes some dinosaurs to force the Dinobots into a tar pit, trapping them.

31. Dinobot Island Part 2
As the Deceps steal energy from the island to fill energon-cubes, it disrupts the time-space continuity, causing other timewarps to appear at random across the world. The Autobots have to send mammoths, cowboys and other historic relics back through the timewarps before they are trapped in modern day. The Autobots eventually figure out the cause of the timewarps, and send a force to stop the Deceps on Dinobot Island. They arrive on the island, but are taken out rather handily. All does not look well until the Dinobots revive and stop the Deceps. Prime sees they have learned to function better as a group and allows them to return to the Autobots.

32. The Master Builders
Grapple has designed a solar energy-collecting tower, but Prime won't allow its construction on the grounds that it's too difficult to defend, and the consequences would be too great should Megatron take it over. Hoist and Grapple go to sulk in the desert, and the Constructicons dupe them into believing that they've deserted. They build the tower, supposedly for the sake of building it, but after it is finished the Constructicons turn it over to their leader and the Autobots are forced to destroy it.

33. Auto Berserk
Red Alert has always been a little jittery, but he is pushed over the edge when an explosion jolts his circuitry while he is helping guard a deadly tank. He thinks Prime is out to replace him, and runs away scared. Starscream is once again kicked out of the Deceps and strikes out to take the tank himself. Eventually, Red forms an alliance with Starscream and the Autobots have to retrieve the tank and repair Red's circuits before he self-destructs, with Inferno in charge of the rescue of his old friend.

34. Microbots
Megatron has obtained a new super energy component, the "Heart of Cybertron," from the crashed Decepticon ship. It is violently unstable, and could explode catastrophically at any time. Perceptor, Brawn and Bumblebee are shrunk to micro size to sneak into Megatron's body (he's "drunk" at the time) and retrieve the component. The search is difficult, given Megatron's immune system, and the argument between Perceptor and Brawn of mind over power, but Perceptor finally earns Brawn's respect as the trio finds the component and manages to escape Megatron and shoot the self-destructing component just in time.

35. Megatron's Master Plan Part 1
36. Megatron's Master Plan Part 2
Megatron conspires with a human politician and sets up the Autobots so it appears that they are not acting in Earth's best interest. The Autobots are put into a ship and sent back to Cybertron, but discover Megatron has reset the course to take them into the sun. Meanwhile, Spike discovers the truth on Earth. The Autobots return to Earth low on energon, but they are still able to defeat the Decepticons.

37. Desertion of the Dinobots Part 1
38. Desertion of the Dinobots Part 2
The Transformers begin to suffer the effects of the decay of a rare element, Cybertonium, which does not exist on Earth. The Earth-built Dinobots are not affected, but - disenchanted with always doing the Autobot's dirty work - have left for Cybertron. The Decepticons get their supply from the Space Bridge, but the Autobots need the Dinobots to get them their supply. Carly and Spike pursue them to Cybertron and team up with Swoop who is the only Dinobot to escape capture. Together the three rescue the others and after a brief history lesson, the Dinobots are convinced to return to Earth with the Cybertronium for the Autobots.

39. Blaster Blues
Blaster feels unappreciated for his ability to pound out the tunes, but other tunes are overwhelming earth, as Megatron uses a radio-jamming device on the moon to disrupt all radio signals. The Autobots assist the radio-less humans anyway they can, while Cosmos and Blaster try to stop the Deceps. They are captured, but Blaster uses his own music to jam the Deceps' radio jammer. Meanwhile, Omega Supreme and Astrotrain duke it out for control of the jamming base.

40. A Decepticon Raider in King Arthur's Court
Warpath, Hoist, and Spike are fighting Starscream, Ravage, Rumble, and Ramjet when the Decepticons go in a cave to escape, pursued by the Autobots, and all are transported back to medieval times. The Decepticons hook up with one Lord, while the Autobots hook up with another knight whose daughter Spike is attracted to. Spike gets a full suit of armor and rides Warpath in a joust against Rumble and Ramjet. The joust is not spectacular, because the Transformers are low on fuel. The Decepticons kidnap the knight's daughter, and are able to repell the Autobots because their human ally provided them with an energy source (right before they betrayed him, of course). They also have an advantage because they have made a primitive gunpowder. The Autobots eventually win, the daughter agrees to marry her kidnapper, and the Transformers go back to the cave with a wizard who promises to send them home. The action is not over yet, because the Transformers must duck a dragon to get to the cave. They find themselves back in the middle of the major battle they started out in.

41. The Golden Lagoon
Warpath, Smokescreen, Skids, Powerglide, and Beachcomber end up in a firefight with Megatron and several Decepticons. Beachcomber and Thrust become separated in the conflict and end up in a forested area. Beachcomber finds a hidden lagoon with a pool of electrum. Unfortunately, Thrust discovers that if one coats oneself with this electrum, one becomes invulnerable. The Decepticons coat themselves with the electrum and trash the Autobots. Eventually, the Autobots figure out what is going on, find the pool, and coat themselves with electrum. Megatron wishes to destroy the pond before this can occur. The Autobots arrive just before the Decepticons and bathe in the liquid. What follows is a standoff in the secret lagoon. Eventually, the Decepticons' coating of electrum wears off and they flee, but before retreating, Megatron destroys the electrum pool and the resulting explosion destroys all life in the area. The once beautiful lagoon is now wasteland and Beachcomber is horrified at the fighting he has brought to the peaceful forest.

42. The God Gambit
Cosmos discovers an energy source on Titan (a moon of Saturn), but is pursued and disabled by Astrotrain. Astrotrain persuades Titan's inhabitants to worship him as a god, and to help him mine the energy crystals. Omega Supreme, with Perceptor and Jazz aboard, arrives and eventually drives off the Decepticons.

43. Make Tracks
Tracks is stolen by a human and his abilities to talk and transform are lost. Once reconnected, he reveals who he really is and the two work together to discover that the Decepticons have hired humans to steal a total of 500 cars which they are converting. The Decepticon-controlled cars are unleashed and the Autobots spread out over the city to stop them. They are highly outnumbered, though, when the cars all turn into Decepticons drones. They are finally stopped by Blaster disrupting their remote control signals.

44. Child's Play
Through a freak accident with the space bridge, a group of Autobots and Decepticons find themselves transported to another world where they are the size of toys. A child helps the Autobots, but the other aliens believe they are dangerous and want them dissected. They finally escape using a toy rocket modified by Perceptor.

45. Quest for Survival
Cosmos, Spike, and Bumblebee are bringing robotic insecticide to Earth to stop the Insecticons when they are caught by robotic plants called Morphobots. They manage to escape, but carry the plants with them unwittingly. Cosmos goes down and the Morphobots multiply quickly. The Decepticons discover what is going on and try to claim the insecticide for themselves. The Autobots get through the Morphobots by using Blaster's music, but the insecticide is destroyed. The Insecticons try to feed on the Morphobots, but instead are eaten by them (except the original Shrapnel, Bombshell, and Kickback who escape). The Autobots shoot the Morphobots back into space in a rocket.

46. The Secret of Omega Supreme
Omega Supreme tells his story to Optimus Prime of how he was guardian of Crystal City on Cybertron. There, he was friends with the Constructicons until Megatron changed them and they destroyed the city. Now he seeks revenge and has pursued them to Earth.

47. The Gambler
En route to Earth from the planet of giants, the Autobots are captured and de-energized by a gambler and con-man. Smokescreen is unaffected and teams up with the being to win - via gambling - enough energon to restore the ship and the Autobots. The Decepticons Astrotrain, Dirge, and Ramjet attempt to interfere, but are driven off with the help of another Autobot, Defcon.

48. Kremzeek!
Somehow, an energy being is created who is small compared to the Autobots, and runs around yelling Kremzeek! Kremzeek! He goes into the electrical lines and ends up in Japan. At some point, a Japanese scientist helps the Autobots. An army of little Kremzeeks becomes a very big Kremzeek but the Autobots transmit it into the Decepticon base using the 'cons energy magnet..

49. Sea Change
Seaspray falls for a girl on another planet. She is a resistance fighter against a robot called Deceptitran. There is a pool that changes beings into anything they want. The girl and Seaspray change into merpeople and go to the underwater base of the rebels. In the process, Rumble is tricked into becoming a tree.

50. Triple Takeover
Blitzwing and Astrotrain are dissatisfied with the Decep ranks and take off on their own. They dupe Starscream into leading himself and Megatron into a trap. Blitzwing takes over a stadium and abducts a football coach, believing him to be a strategic genius. The Constructicons build a fortress and maze around the stadium, and build four Autobots into a throne after they fall. Meanwhile, Astrotrain makes an "army" of subway trains and uses them to collect power. Megatron eventually gets loose, and brings down the rebellion.

51. Prime Target
A (stereotypical) British hunter wants to get the ultimate prize, the head of Optimus Prime, mounted over his fireplace. So, he manages to lay several clever traps for other Autobots including Grapple, Inferno, Beachcomber and Blaster, and takes them hostage in his castle. He then challenges Prime to come and release them. Prime works his way past many other complex traps, and naturally frees his comrades and escapes with his head.

52. Auto-Bop
Megatron is using a dance club to play hypnotic music, which he uses to force humans to help him construct buildings. Tracks and Blaster infiltrate the place with the help of Tracks' pal Raul and his buddies. Raul discovers the best cure: a splash of water. Tracks frees the humans while Blaster has a one-on-one battle with Soundwave--"all talk, no shock".

53. The Search for Alpha Trion
Shockwave discovers that "female" Autobots have been raiding the Decepticon energeon stockpiles. Megatron sends Starscream and a few other Decepticons to capture their leader, Elita-1. They do so and blackmail Prime into coming to Cybertron to rescue her. He is captured and is executed by Starscream. Elita-1 uses her time-freezing ability and saves Prime, but it nearly costs her her life. Only Alpha Trion can save her. Meanwhile, Powerglide, Inferno and Ironhide have come looking for Prime and they join forces with the other females to fight off the Deceps. It is also implied in this episode that Alpha Trion created Optimus Prime and Elita-1.

54. The Girl Who Loved Powerglide
A spolied, rich teenage girl gets attacked at a carnival in honor of her birthday by the Decepticons. Powerglide saves her, and she falls for him. She tries to tag along with him. The Decepticons want her because they believe she has the secret of her father's last invention. The Decepticons capture her and try to suck the info out of her brain, but she is too much. Powerglide has severely been beaten up. She looks at the locket that her dad said never to take off, which she also knows contains the invention's secret, and throws it into some machinery, saving Powerglide. Powerglide opens his chestplate, and there is an outline of a glowing heart.

55. Hoist Goes Hollywood
Hoist saves some stuntmen in a Hollywood movie and is asked to star himself. He is quickly joined by Tracks, Warpath, Sunstreaker, and Powerglide who all want in on the movie business. They unwittingly stumble upon the Decepticons as they try to rescue Dirge and a machine stolen from Wheeljack's workshop on Cybertron which have crashed at the studio. The Decepticons are stopped and Wheeljack reveals that the machine never really worked anyway.

56-57.
The Key to Vector Sigma Part 1
The Key to Vector Sigma Part 2
The Decepticons seek out Vector Sigma in order to give their new warriors, the Stunticons, life (so they can have an advantage on the ground). The Autobots pursue on Cybertron. The Decepticons get the key to Vector Sigma, and they manage to succesfully gain access and give the Stunticons life. The Decepticons also accidently discover that the Key has the power to transmute organic material into machinery and Megatron plots to make Earth into a second Cybertron. In order to stop them, the Autobots create the Aerialbots, but thecost is Alpha Trion's life. The Aerialbot leader, Silverbolt, must overcome his fear of heights in order to succesfully defeat the Stunticons.

58. Aerial Assault
Somewhere in the Mid East, the Deceps and an arms smuggler have kicked the local prince out of his palace and are using his resources to steal airplane parts; the planes are disassembled, built into harmless looking vehicles for transport, and then taken apart to be used to build an air fortress. The Aerialbots are sent to investigate, and Sky Dive and Slingshot go undercover. They are partially taken apart, and befriend a teenager named Hassan who helps them reconstruct themselves. Slingshot is still without a weapons console as the other Aerialbots fight the Combaticons and the new air fortress. He and Hassan make the repairs just in time to form Superion to defeat Bruticus. Everyone is surprised to find Hassan is the ousted prince.

59. War Dawn
The Autobots and Aerialbots travel to Cybertron on Omega Supreme to stop Megatron's latest plan. The gullible Aerialbots are tricked by the Decepticons and sent back to the beginning of time, but due to the timely intervention of the Autobots, are only transported back by in time a few million years where they observe how Transformer Orion Pax and his friends were recreated by Alpha Trion into Optimus Prime and others and became leaders of the Autobots on Cybertron against the forces of Megatron.

60. Trans-Europe Express
A million dollars will be given to the select charity of a trans-Europe race, where several Autobots participate. The race is actually set up by the Deceps, who are searching for the weather-controlling Pearl of Bahoudin and need a metal from the race car of snobbish driver Augie Canay to contain it. The Stunticons trash most of the Autobots during the race, leaving only Bluestreak, Tracks and Bumblebee to retrieve the pearl and Augie's car. Augie sacrifices his car to defeat Menasor, while the others destroy the pearl once it has been released from its protective shell.

61. Cosmic Rust (aka Rust in Piece)
Decepticons are dying of the Cosmic Rust that Megatron picked up on a lost robot colony. They kidnap Perceptor to diagnose it and come up with a cure. Perceptor says the cure is element X, which the Autobots used to coat the Statue of Liberty. The Decepticons get the element to cure themselves, and infect Perceptor when he is rescued, the rest of the Autobots. Blaster radios from Cosmos in space that there is no more element X to be found. The Autobots do battle with the Decepticons at the Statue of Liberty so they can scrape off some element X. The Autobots win and go back to the Ark, and use the element to cure themselves.

62. Starscream's Brigade
Starscream is banished by Megatron to an island where he discovers the remains of several WWII vehicles. He masterminds a plot in which he steals five personality components from Cybertron and installs them in the vehicles, reforming them into his forces, the Combaticons. He then uses them to take out his revenge on Megatron, who cannot stop the Combaticons as Bruticus, even with the help of Devastator. The Stunticons arrive at the last minute and defeat Bruticus as Menasor and Starscream and the Combaticons are banished to an asteroid.

63. The Revenge of Bruticus
Starscream travels to Cybertron where he continues his plots against Megatron. Earth is driven into the sun via the space bridge, and the Protectobots evacuate humans from dangerous situations. Megatron and Prime team up to stop Bruticus, who is out of control on Cybertron. Starscream volunteers the information on Bruticus' weak points and he is seemingly defeated. In reality, Megatron has gained control of the Combaticons and Prime has been fooled.

64. Masquerade
After several skirmishes with the Stunticons, the Autobots finally manage to capture them as they are trying to steal mysterious mechanical parts. The Autobots place them in special cells so they can't form Menasor. WheelJack then comes up with a special camoflage paint to allow the Autobots to disguise themselves as the Stunticons, thereby sneaking close to Megatron without him knowing it. Sideswipe, Prime, Mirage, Windcharger, and Jazz disguise themselves as Breakdown, Motormaster, Dragstrip, Wildrider and Deadend to find out what the spare parts are for. The gambit succeeds, and they find out the parts are for a super laser, but Breakdown causes his cell to malfunction and he breaks free. He frees the other Stunticons and they return to Decepticon camp to warn Megatron. When they arrive at camp, Megatron cannot distinguish between the two groups of Stunticons. As a test, he commands them to form Menasor, and whoever can't will be destroyed. Surprisingly, both groups do. Prime has Windcharger use his agnet beam to hold the Autobots together while Mirage creates an illusion of Menasor. The real Menasor hits the fake one, however, and the fake one comes apart. The charade discovered, the Autobots manage to destroy the laser barely get away from the Decepticons.

65. B.O.T.
Three college students are forced to build something as a science project, and they end up creating B.O.T. Meanwhile, the Protectobots end up fighting the Combaticons, who are trying to upgrade themselves without Megatron's knowledge. They end up destroying all the Combaticons except Swindle, who escapes. Swindle sells the spare parts of his comrades for money, but when he tells Megatron what happened, Megatron gets angry and has a bomb placed in Swindle's head that will blow up in a set amount of time if Swindle fails to rebuild the Combaticons. In the meantime, the three students need a computer board to make their robot work. They think they find what they need when they pick up Brawl's personality board. After inserting the board into the robot, the robot goes berserk and rampages through the city. Swindle rebuilds the Combaticons, but without Brawl's personality board they can't form Bruticus. Swindle finds B.O.T. and restores Brawl's brain, and Megatron orders the Decepticons to the Ark. Megatron has a new weapon, that when fired, will obliterate the Ark and the Autobots. The Protectobots are called to the scene, and they merge to form Defensor, who puts up a shield to buy time. The college kids eventually get their robot on-line who saves the day by getting close enough to the cannon and self-destructing.

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