The Decepticon: Not the most terrifying moniker for a Decepticon, but Astrotrain is actually one of the most powerful thanks to his ability to triple-change.
He can morph into a train and a space shuttle, which is exactly the kind of diversity youd look for in a deadly Decepticon.
Nastiest Moment: Not only is Astrotrain a triple-changer, hes also two-faced, betraying Megatron and ascending to the role of Decepticon leader
The Decepticon: Clearly inspired by the Hammer horror character, Igor is actually the decapitated head of Long Haul, who was destroyed in Transformers: Revenge Of The Fallen.
Modified to become his own Decepticon in Transformers: Dark Of The Moon, Igor is Megatrons loyal, scuttly minion.
Nastiest Moment: Eating the head of the Abraham Lincoln statue in Washington DC. Talk about evil
The Decepticon: A Decepticon who transforms into a cop car (a Saleen S281 to be precise), Barricades job is to infiltrate under the guise of the police. After all, whos more trustworthy than a police officer?
Nastiest Moment: Though Barricades more insidious than all out nasty, destroying Wheeljack in Dark Of The Moon wasnt exactly nice, was it?
The Decepticon: A bird-like Decepticon who excels at subterfuge, Laserbeak is often employed by the Decepticons to spy on the Transformers and, occasionally, take them out.
Hes also able to take on different forms for infiltration purposes.
Nastiest Moment: Laserbeak disguises himself as a Bumblebee-esque Autobot, infiltrating the home of Jerry Wang before killing him.
The Decepticon: A Decepticon who is also a minion to Blackout, Scorponok takes the form of a mechanical scorpion, which is sort of a hint at how deadly he is.
Because of his ability to burrow, hes used to hunt and kill--as seen in that great scene in the first Transformers when he takes on a load of soldiers.
Nastiest Moment: Scorponok ambushes soldiers based in Qatar, burrowing under the sand and attacking from below. He even drags some of the guys into the sand.
The Decepticon: She looks like your average college undergrad, but Alice is actually a Decepticon Pretender; a special kind of Transformer that uses external armour shells to hide all robotics and give the impression of being human.
Now thats deadly
Nastiest Moment: Alice gives Sam (Shia LaBeouf) a quite literal tongue lashing when she attempts to strangle him using her robotic tongue before chasing him and Mikaela (Megan Fox) through college on a destructive rampage.
The Decepticon: A lovable goon, Skywarp isnt big on smarts, but hes important in the Transformers mythology because hes the first Decepticon to wake up on earth and reactivate his brothers in Transformers: The Movie.
His greatest asset is his teleportation ability, which makes him indispensable to Megatron. Until hes dispensed with
Nastiest Moment: The nastiest Skywarp gets is insulting Starscream in front of Megatron.
The Decepticon: A total beast of a Decepticon, Grindor is the kind of warrior you really want on your side.
He takes on the robust form of a Sikorsky CH-53E Super Stallion.
Nastiest Moment: As if kidnapping Sam and Mikaela wasnt enough, Grindor also goes up against Optimus Prime and Bumblebee, showing off some seriously dirty fighting moves.
The Decepticon: A Decepticon who seems to have been on the Atkins diet, Reedman is a spindly Transformer who consists of numerous Microcons.
He sort of looks like a preying mantis, and his skinny stature renders him damn near invisible from some angles. Which, naturally, makes him all kinds of deadly.
Nastiest Moment: During an attempt to steal the All Spark (in Transformers: ROTF), Reedman uses his razor-like extremities to slice a soldier up. Nice.
The Decepticon: As the name suggests, Frenzys a manic, extremely vocal little Decepticon with needle-like limbs.
Thanks to his diminutive size, hes great at sabotage and it helps that hes able to change shape at will--he variously becomes a mobile phone and a boom box.
Nastiest Moment: While aboard Air Force One, Frenzy takes out a number of Secret Service agents using killer disc blades and his own teeny machine guns
The Decepticon: A sly baddie who comes with his own symbiotic Decepticon in the form of Scorponok, Blackout is fiercely loyal to Megatron.
He takes the form of an MH-53J Pave Low III helicopter, which means hes useful for air strikes--and hes not above taking down other Decepticons if it means preserving his own parts.
Nastiest Moment: One of the first ever Decepticons that we see in action in Bays Transformers, Blackout attacks a US military base in Qatar, benefiting greatly from the element of surprise.
The Decepticon: The Decepticons communication officer, Soundwave only appears in satellite mode during the first movie, though Dark Of The Moon gives him a Mercedes-Benz upgrade.
Super-intelligent and devious, hes Megatrons spy, keeping all the other Decepticons in check.
Nastiest Moment: Soundwaves more devious than all-out nasty, though kidnapping Sams parents in order to track him down (in Revenge Of The Fallen) was a pretty low blow.
13. The Fallen
The Decepticon: He sounds like a grungy rock outfit, but The Fallen is actually the Decepticons original alpha--hes so important that the second Transformers flick was named after him.
Hes a rare Transformer who doesnt actually transform in the film. His greatest power? Opening space bridges, which he plans to use to take over planet Earth. Also? Hes voiced by the one and only Tony Todd.
Nastiest Moment: Invading Earth, obviously. His plan to turn Earth into a new base for the Decepticons is up there with the grandest of grand evil schemes.
The Decepticon: Without a doubt one of the coolest-looking Decepticons, mostly because he has a spiky collar that makes him look seriously badass, Sideways is a surveillance agent who takes the form of a silver Audi R8.
Despite his cool appearance, hes also a bit of a coward, preferring to let the big Decepticons fight most of the battles.
Nastiest Moment: The nastiest thing Sideways does is hide while letting the other Decepticons do all the heavy lifting. Hes discovered hiding in Shanghai by the Autobots and swiftly dealt with.
The Decepticon: A smaller Decepticon who can turn into a cassette tape (ah, the 90s), Rumble dreams of becoming the leader of the Decepticons, but he doesnt really have the qualities that role would require.
For a start, hes tiny, so he isnt particularly good at fighting--even if he can create mini earthquakes by smashing his massive arms against the ground
Nastiest Moment: In Transformers: The Movie, its Rumble who destroys the Autobots communication capabilities before taking on the Transformers with a little help from Frenzy, Ratbat and Ravage.
The Decepticon: This guys all about demolition, mostly because hes built like a brick shithouse.
A weapons specialist and all-round warrior, hes sort of a marine version of a Decepticon and lives for the battlefield. Hes eventually taken down by Bumblebee
Nastiest Moment: Brawl really shows what hes made of during the battle in Mission City, fighting tooth and nail (or nuts and bolts) against the Autobots. Even when hes damaged and half-destroyed, he keeps fighting. Thats how much he hates Autobots.
The Decepticon: Sort of resembling a mini Dinobot crossed with a xenomorph, Ravage is the pet of Soundwave. His tail has a deadly claw and he has a single red eye (in a clear nod, surely, to HAL).
Nastiest Moment: Attempting to take down Sam in the battle in Egypt.
Sadly, Bumblebee comes to Sams rescue, smashing Ravage to pieces.
The Decepticon: Scalpel is also known as The Doctor, which is fitting, because hes pretty much the definition of a mad scientist.
With bulging eyes and barbed, insectoid limbs, he enjoys endlessly torturing his robotic victims.
Nastiest Moment: Scalpel is responsible for attempting to extract information directly from Sams brain by inserting a probe into his nostrils. Sadly, his demand to remove the entire brain goes unheeded when Sams rescued by the Autobots.
The Decepticon: Boasting a British accent (hes voiced by Mark Ryan) and the ability to transform into a 2013 Lamborghini Aventador, Lockdown is the main big bad in Transformers: Age of Extinction.
A bounty hunter by trade, his head turns into a gun
Nastiest Moment: We dont want to spoil it, but suffice to say he gives Optimus Prime a pummelling
The Decepticon: One of the most powerful Decepticons ever, the Devastator of the comics is a composite of six Constructions.
That gives him huge power, but because hes composed of six different psyches, hes prone to raging tempers that normally result in total destruction.
Nastiest Moment: In the 2005 cartoon, Devastator destroys two Dinobots (Grimlock and Sludge). He even makes it look easy
The Decepticon: His name means murderousness in Cyberton and he was borne out of the scrap metal of defeated Decepticons, moulded by Unicron.
With the ability to fly at supersonic speed, hes also able to take out a Transformers circuits using a special laser. Hes so badass that he really should be leading the Decepticons
Nastiest Moment: In the Marvel comics, Cylconus mind was taken over by Unicron, who used him to kill Shockwave and become leader of the Decepticons
The Decepticon: With a fighting style thats inspired by the movements of football players, Bonecrusher lives for the kill.
Somewhat hunchbacked, he takes the form of a Buffalo H Mine-Protected vehicle and is driven by pure hatred for all things Autobot.
Nastiest Moment: Bonecrusher chases Optimus Prime down a highway, slinging other vehicles out of the way and wantonly destroying anything that strays into his path...
The Decepticon: A giant Decepticon, Shockwave is a scientist who lacks any perceived emotion and can turn into a self-propelled cannon.
He also has power over a Cybertronian creature called Driller, which comes in handy whenever he needs to burrow underground.
Nastiest Moment: Shockwave was responsible for sealing off Chicago in Transformers: DOTM, preventing any outside forces from interfering with the battle. Not only that, he also takes on Optimus Prime
The Decepticon: A loyal disciple to The Fallen, Megatron is the Big Bad of the Transformers universe--think of him as a giant, robotic Darth Vader and youre pretty much there.
The movies have seen him go through numerous different looks--in Dark Of The Moon, he wears a fetching cowl.
Nastiest Moment: After being defrosted in the first Transformers, Megatron makes short work of Mission City, heading up a Decepticon vs Autobot scrap that decimates much of the city
The Decepticon: A flying Transformer who takes the appearance of a Lockheed Martin F-22 Raptor jet, Starscreams a fan favourite and the second in command behind Megatron.
Nastiest Moment: Taking out manned fighter jets during an aerial scrap. Its not fair, its really nasty and it looks freaking awesome.