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"That is no longer an Autobot, just a mindless beast. Its only instinct: to destroy anything in its path."
Megatron about Cliffjumper [src]

Terrorcons are formerly deceased Cybertronians who have been raised from the dead using Dark Energon. Thankfully, they are not invulnerable. Energy blasts of sufficient force can deter them, though the best method is to use bladed weapons to slice them to pieces—the smaller the better—as the Dark Energon charge cannot sustain itself within the smaller, disparate components. Simply slicing them in half doesn't seem to be sufficient, though the method of irradiation may be a factor: The one case known to be prodigiously active despite total bisection was the product of a direct implantation of crystallized Dark Energon; all others to date have been created by absorbing energies emitted over a wide area by a shattered crystal. Unlike other Cybertronians, Terrorcons possess a unique anti-spark that can even survive the destruction of their physical body.


Darkness Rising Mini-Series[]

After Cliffjumper was killed after a battle against the Vehicons, his body was saved by Starscream for use in experiments. When Megatron returned, he wished to test the then-theoretical property of Dark Energon to revive the dead. It worked, to an extent. Cliffjumper was reborn as a screaming beast, and he promptly destroyed two Vehicons before leaping at Megatron. Megatron commented that the creature before him was no longer an Autobot and sliced the Terrorcon Cliffjumper in half with his claw. The half with the head remained alive, and it attacked Arcee when she tried to rescue it.

Megatron realized the potential for brutal, undead warriors from the encounter with Cliffjumper and decided to use the Dark Energon more extensively. When Optimus Prime realized that the substance they were dealing with was Dark Energon, he and Ratchet put two and two together and realized Megatron was up to something, that something being raising the dead. Eons ago, there had been a war on Earth after the smuggling of Energon to the planet. Since Cybertronian bodies do not decompose, there were some still buried in the ground. Megatron appeared to Optimus Prime and Ratchet in a large canyon and threw a chunk of Dark Energon into the ground, which promptly began to glow bright purple, as did Megatron himself. The ground opened up, and undead robots crawled out from the cracks, brandishing the same deadly weapons they'd carried in the previous war. Despite being outnumbered, Optimus and Ratchet were able to dispose of the Terrorcon horde after a great deal of time but, only to be informed by Megatron that this was merely the prelude to his main event. That event, they soon discovered, was raising the countless dead on Cybertron itself. 

Unfortunately for the Autobots, Megatron was already a step ahead of them in implementing his plan, since he already had a working space bridge and a ship to get to it. The Autobots used their GroundBridge to reach the space bridge, but failed to stop Megatron from throwing his supply of Dark Energon through, raising the entire deceased population of Cybertron. Before the Terrorcons could pass through the bridge, the Autobots managed to reverse the power flow, causing the bridge to explode, taking the zombies and Megatron with it.  


Starscream later used a shard to attempt to revive the slain Skyquake. While he successfully raised the mighty Decepticon, due to a series of unexpected events the revenant Skyquake was left trapped in an alternate dimension.


The addition of Dark Energon to Knock Out's Synthetic Energon formula turned Cylas into a new form of Terrorcon which craved energon. His bite passed on the infection, causing a brief plague in the Decepticon Vehicons, the only way of destroying them was a shot to the spark. Starscream and Knock Out attempted to handle the plague themselves but Megatron would soon find out. The plague was quelled by the Decepticons but at the cost of over half the Vehicons being destroyed. Airachnid, however, was freed from her stasis lock imprisonment and infected by Cylas before she killed him but she was space bridged to Cybertron's moons. Airachnid presumably spread the plague to the Insecticons she fed upon. 

Predacons Rising[]

Aiming to destroy Primus, Unicron raised an army of Terrorcons from the many remains at a Predacon burial ground. The horde marched to the Well of All Sparks soon facing the Autobots in the Nemesis and the Predacons Predaking, Skylynx, and Darksteel. The Terrorcon horde headed into the Well, almost reaching the core before Unicron's anti-spark was trapped and the Terrorcons all disintegrated. 


Main Article: Terrorcons/Gallery

Notable Terrorcons[]


  • The term Terrorcon was first used in "Loose Cannons" when Arcee was describing Skyquake's zombie revival, which was caused by Starscream.
  • Terrorcons seem to be limited in their fighting abilities as none of them were ever seen transforming, using their built in weapons or even able to speak, the exception being the Dark/Synth-En Terrorcons.
  • Many fans believed that Dreadwing and Makeshift would become Terrorcons in Thirst.
  • In most of the Transformers franchise, Terrorcons are Transformers that turn into various types of animal mash-ups. Their appearance in "Predacons Rising" as zombie-Predacons reflect their mainstream counterpart.