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Sinnertwin is the name of two fictional characters from the Transformers series. The original Sinnertwin was a member of the Terrorcon team introduced in 1987. The second Sinnertwin is the Shattered Glass Transformers version of the original. Another version of the character appears in the Aligned Continuity as a Predacon named Twinstrike.

Transformers: Generation 1

Transformers character
Name Sinnertwin
Series Transformers: Generation 1
English voice actor David Workman / Jered Barclay
Japanese voice actor Masashi Ebara
First appearance The Transformers episode #89, "Grimlock's New Brain"
Alternate modes Two-headed monster
Gender Male
Motto "The sound of ripping metal is music to my audio modules."
Rank 5
Sub-group Terrorcons

Sinnertwin is a combiner who usually forms a limb of Abominus. He also has helped form Hun-Gurrr Super Robot, Inferno Super Robot and Starscream Super Robot.

Fictional biography

Prowls the perimiter of the Terrorcons' lair looking for trouble -- and hoping to find it! Then he can show off his razor-sharp teeth, piercing pronghorns, and steel-shredding claws. Has flame cannon and flame breath in creature Mode, armor-piercing rocket-grenade launcher in robot Mode. Combines with fellow Terrorcons to form Abominus. Unnerved by small creatures like mice, insects, and mini-droids.

Animated series

The Terrorcons first appeared as part of Galvatron's expedition to the lifeless head of Unicron, hoping to obtain anti-electrons to gain the upper hand over the Autobots. Rodimus Prime and his team investigated, but Galvatron's anti-electron beam caused them to malfunction. The Terrorcons eagerly attempted to take advantage of this, but a momentarily intelligent Grimlock managed to create the Technobots. The two teams battled as Abominus and Computron, with Abominus being soundly beaten and forced to flee. They next appeared under control of the Quintessons (during one of Galvatron's periodic bouts of insanity) who, in order to control the unruly Terrorcons, placed a time limit device on them in order to limit the amount of time they could spend as Abominus, later sending them to kill a human who had discovered their base on Saturn. (This episode was actually supposed to be aired after the above-mentioned episode, but was aired first in a transmission error). They were part of Primacron's assistant's animal-Transformers themed army who battled against Tornedron, but were deactivated by the villain, only to be later revived by Grimlock. Their last major appearance was to steal a new heat-resistant metal from Doctor Morgan on Earth. The Technobots intervened, and in the ensuing battle and subsequent combiner grudge-match, this time the Terrorcons emerged victorious and escaped with the metal, injuring Dr Morgan's daughter - leading to his later attempts to kill all Transformers - Autobot or Decepticon - with the Hate Plague. They briefly appeared in The Rebirth, battling the Throttlebots and once again coming up against the Technobots during the attack on Autobot City.

The Terrorcons would make sporadic appearances throughout the Japanese Transformers: The Headmasters show, mostly acting as part of Galvatron's army and battling other Special Teams in their combined mode, but never having any major roles. Abominus would make a further appearance alongside most of the original series Decepticon Combiners in the single episode of Transformers: Zone, as one of the nine "Great Decepticon Generals" (the others being Devastator, Menasor, Bruticus, Predaking, King Poseidon, Trypticon, Overlord and Black Zarak) dispatched by the alien Violenjiger to harvest Zone Energy. They were defeated by Dai Atlas. It is interesting to note that Abominus here is a singular entity and shows no sign of being the combined form of different Transformers.[1]


Devil's Due Publishing

In the third G.I. Joe vs. the Transformers crossover from Devil's Due Publishing the Terrorcons are seen as part of the Decepticon forces being unified by Serpent O.R., almost coming to blows with the Predacons. Initially unwilling to serve someone so small, the Terrorcons are convinced by Serpent O.R.'s memories of Megatron. They are subsequently seen during the Decepticon attack on the Autobot Capital City. After the final battle between the Cobra Commander controlled Serpent O.R. and the Autobots, Hun-Grrr determined to kill Optimus Prime for good, but was killed by a G.I. Joe vehicle.

Fun Publications

Cutthroat appears among Bludgeon's troops in the story At Fight's End by Fun Publications. Framed for leaking information to Megatron Hun-Gurrr is attacked by Bludgeon and the Seacons. Together with the other Terrorcons he formed Abominus, but they are defeated by Piranacon and left in stasis lock.

Most of the Classicverse universe was destroyed in the BotCon 2012 story Invasion. Sinnertwin has not been depicted as one of the survivors and is presumed destroyed in that continuity.

IDW Publishing

The Terrorcons made their first IDW Publishing appearance in The Transformers: Spotlight issue on Sixshot. A group of psychopathic Transformers who idolized Sixshot, attempting to cause enough mayhem to impress him, the Terrorcons were dispatched to Muma-Obscura on a fact-finding mission. However, they were captured by the Reapers, a group of former beings of destruction like Sixshot who now aspired to a higher purpose by wiping out warlike races and war itself. When Sixshot, trying to cling on to some form of purpose, journeyed to Muma-Obscura to find out what had happened to them, he fought the Reapers to a stalemate, so they offered Sixshot a chance to join them in their quest to wipe war from the universe. Their condition to prove his loyalty was to kill the Terrorcons, much to their horror. Sixshot seemed to accept, but instead blasted all around them, and departed with them. In the issue, Sixshot implies that the group gave themselves the name of Terrorcons, rather than it being any sort of official designation.

Sinnertwin was among the Decepticons living on Cybertron with the Autobots and the NAILs after the war had ended. When Megatron returned from the wilderness, the Decepticons began rioting in the streets. City on Fire Cutthroat, Rippersnapper, and Sinnertwin were later assigned by Starscream to guard his Regenesis ore mine within Metroplex, challenging Windblade and her entourage when they came to investigate.


In the Japanese manga "Big War" #2 the Autobots Rodimus Prime, Grimlock, Kup and Wheelie, along with their human allies Spike Witwicky and Daniel Witwicky send Computron into battle against Galvatron's new warrior combiner Abominus. The Terrorcons spit "corrosive control liquid" against Computron, taking control of him and turning him into a Decepticon. Spike luckily uses his new exosuit to free Computron with "defense spray." Defeated, Galvatron retreats.[2]

Marvel Comics

The Terrorcons would make their first appearance in the Transformers comic in the Headmasters miniseries, working for Scorponok on Nebulos. Issue #3 opened with them randomly attacking a Nebulon city and being opposed by the Technobots and Autobot Headmasters. They also battled the Autobot Targetmasters in issue #4, making them flee when the Autobots realized the damage their battle was doing to a Nebulan city (and the monument they were trying to save).

They would travel to Earth and make their first appearance in the main comic in issue #49, joining the battle between Scorponok's Decepticons and Ratbat's Decepticons before uniting with them to decimate the Earthbound Autobots. However this was all a ruse by Starscream to seize the power of the Underbase, and in the subsequent battle the Terrorcons were among the scores of Transformers deactivated by Starscream's power. They were not seen again in the US comic.

The whole Terrorcon team were the primary villains of the Time Wars prologue in #199, guarding and operating a device that was to leech Earth's energy until the Autobots stopped them; the team goofed off to rampage through a human city until Hun-Grr ordered them to return to work. Seeking revenge for the defeat, Soundwave and the Terrorcons went to Autobot City Earth; discovering they'd timejumped back to 1989, the Terrorcons wanted to go after them and Soundwave complied in order to maintain favour with the troops. They had little involvement in the Time War itself, joining the Autobot-Decepticon alliance initially before returning back to 2009 after seeing how poorly the alliance fared against Galvatron and Megatron.

Transformers: Mosaic

Sinnertwin appeared in the Transformers: Mosaic story "Wrath of the Gods" by Juan Pablo Osorio.[3]


  • Hasbro Transformers: Generation 1 Terrorcon Sinnertwin (1987)
A new mold. Come with two guns.
  • Hasbro Transformers: Prime Legends Twinstrike (2013)
This toy was repurposed as Generation 1 Sinnertwin.

Shattered Glass

Transformers character
Shattered Glass Sinnertwin
Name Sinnertwin
First appearance Reunification by Fun Publications
Alternate modes Two-headed monster
Gender Male
Sub-group Terrorcons

The heroic Sinnertwin is a member of the Terrorcons on the mirror universe of Cybertron. They serve the leader of the Decepticons, Megatron.

Sinnertwin is a former puppeteer. He has a cyronic breath weapon.

Fun Publications

Abominus is sent out to protect Topspin, Breakaway, Skyfall, Landquake and a Quintesson from the rampaging Autobot gestalt Computron, who is attempting to capture them for Alpha Trion. He later faces off against the Autobot super weapon Omega Doom, but is overpowered. He is only saved thanks to help from Nexus Prime and Galvatron. After the battle he is among the Decepticons who see off Nexus Prime and Aquarius the Quintesson.[4]

Aligned Continuity

A version of Sinnertwin also appears in the Aligned Continuity as part of the Transformers: Prime toy line,



  1. Jim Sorenson & Bill Forster (July 22, 2008). Transformers: The Ark II. IDW Publishing. pp. 196-198. ISBN 978-1600101809. 
  4. Reunification by Fun Publications

External links