Decepticons

Barricade is a Decepticon from Michael Bay's Transformers film universe. He transforms into a police car (in various versions, a Saleen S281 or a Ford Mustang). Instead of the traditional police motto "To protect and to serve," the car's body reads "To punish and enslave."
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Barricade (Transformers Film Series) Antagonists Wiki Fandom
Character and traits
Cruelty and ruthless. Barricade turned the traditional police motto into his life philosophy - he was not kidding when he spoke of "punishment and enslavement."
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Need for speed and fights. He is always the first to rush into action, has a passion for speed and battles.
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Manipulative. Barricade enjoys deceiving people, making them trust him, to later see their reaction when the truth is revealed.
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Intolerance of Autobots. His attitude toward the Autobots is simple: destroy them all.
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Role in films
The main antagonist in the film "Transformers." He is the first Decepticon that protagonist Sam Witwicky encounters.
A minor antagonist in the films "Transformers: Dark of the Moon" and "Transformers: The Last Knight."

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Alt-forms and weapons
Police car (Saleen S281 or Ford Mustang).
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In the IDW comics, Barricade is a three-mode vehicle: he can transform not only into a police car, but also into a helicopter.
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Armament: gyro-blades (rotate at over 600 rpm), mace, submachine gun.
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The armor is twice as strong as that of most Cybertronians, allowing it to withstand direct hits and temperatures in excess of 2000°F (approximately 1093°C).
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Height: about 4.9 meters, weight: 2.2 tons.
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In car mode, it reaches speeds of up to 483 km/h.
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Some facts
Partners: Frenzy, Rekage, Saun

Galvatron is a character in the Transformers universe who has become the new leader of the Decepticons. Essentially, he is an updated and enhanced version of the previous leader, Megatron.
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History
During the attack on Autobot City in 2005, Megatron was mortally wounded in a duel with Optimus Prime. The retreating Decepticons took him with them on their ship, but due to overload, the vessel had to be abandoned. The brawler, who had long dreamed of overthrowing Megatron, took advantage of the moment and threw him and the other wounded into outer space.
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Megatron's body was caught in the gravitational pull of Unicron, a super-giant, sinister Transformer. Unicron offered him a deal: salvation in exchange for service. At first, Megatron refused, but faced with certain death, he agreed. Unicron reformatted him, re-armed him, and renamed him Galvatron. He formed the remaining Decepticons into the new leader's personal guard: Cyclonus, Whiplash, and the Sweeps.
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Character and Goals
Having received colossal power from Unicron, Galvatron became even more power-hungry, arrogant, and intolerant than before. He strives to bend everything and everyone to his will, recognizing no worthy opponents. However, prolonged exposure to lava has led to severe mental disorders, which is why he often falls into uncontrollable rages, dangerous even for his own subordinates.
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His main goals are to take over the galaxy and exterminate the Autobots.
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Abilities and Transformation
Galvatron possesses immense physical strength, super-speed, genius-level intellect, and the ability to fly. In robot mode, he is armed with a laser that generates direct electrical current. He can transform into a howitzer.
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Key events
Return to Power: Galvatron's first order of business was to Cybertron, where Scandalist was being crowned. With one shot, he

Megatron is one of the central characters in the Transformers universe, the leader of the Decepticon faction and the main antagonist. He is the sworn enemy of Optimus Prime, the Autobot commander.
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All Hail Megatron Poster
Origin and Backstory
According to one version, Megatron began his career on Cybertron as a gladiator, naming himself after one of the Thirteen Primes, Megatronus. At that time, he was an ally and even a friend of the future Optimus Prime (then known as Orion Pax), the planet's archivist. However, over time, power corrupted Megatron, and he became obsessed with world domination.
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When Cybertron's resources were depleted, the Autobots, led by Optimus Prime, abandoned the planet in search of new energy. Megatron followed them on his cruiser, the Nemesis, but the ships were caught in a meteor shower and crashed on prehistoric Earth. The Decepticons remained dormant for four million years until Megatron awakened in 1984.
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Character and Motives
Megatron is a complex and multifaceted character. On the one hand, he is intelligent, insightful, and a talented strategist who knows how to exploit the weaknesses of both enemies and subordinates. He is demanding, does not tolerate objections, and harshly punishes disobedience. On the other hand, he is alien to mercy and compassion. His main goal is to establish his dominance first on Cybertron, and then throughout the universe, believing that Transformers are a superior race that should rule over all others. He views humans as an inferior life form and is willing to destroy humanity if necessary to achieve the Decepticons' goals.
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Powers and abilities
Physical Strength: Megatron is one of the largest and strongest Transformers. He stands 12.7 meters tall and weighs 5.7 tons. He can triple his weight at will to simply crush an opponent.
Weapon

Knock Out is a character from the animated series Transformers: Prime. He is a Decepticon who combines the roles of a medic and a ruthless fighter.
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Knockout Transformers artwork, Transformers art, Transformers cybertron
Appearance and alt-form
Knockout transforms into a red sports car resembling an Aston Martin DBS V12. He's extremely proud of his polish, and the slightest scratch sends him into a rage.
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Character and role
Knockout is a cunning, vain, and narcissistic Transformer. He admits to preferring "breaking things rather than fixing them," and is more drawn to combat than healing. In combat, he relies on speed and cunning, often using sneak attacks.
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His main partner was Breakdown, a powerful enforcer who embodied physical strength. Knockout often entrusted him with "dirty work" to avoid taking risks himself. After Breakdown's death, Knockout became enraged and thirsted for revenge.
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Abilities and weapons
As a medic and scientist, Knockout possesses valuable skills. He is armed with:
An energy shock spear that can stun enemies with electrical discharges.
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A circular saw that his left hand transforms into.
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With a heavy-duty drill from the right hand.
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These instruments were originally intended for medical purposes, but during the war they became torture devices. In vehicle mode, it is also equipped with twin blasters.
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Key plot points
Knockout performed experimental surgeries on Megatron, including transplanting the arm of one of the Primes.
He participated in street racing among humans and clashed with the Autobots, particularly Bumblebee.
After the capture of the Nemesis and the death of Megatron, Knockout voluntarily surrendered to the Autobots.

Blackout is a Decepticon from the film universe. His characteristics and role may vary in different contexts.
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Some features of Blackout:
Transformation. On Cybertron, it took the form of a space cruiser, and after arriving on Earth, it became an MH-53J attack helicopter.
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Armament: His arsenal includes three machine guns firing mercury capsules and 9mm bullets (mounted on his arms and shoulder), a rotary blaster emitting 700 decibels of sonic energy, and the ability to use his rotating propeller as a close-combat weapon.
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Combat skills. According to the official rating, Blackout's firepower was rated at 9, strength and speed at 8, endurance at 7, and intelligence at 6. He preferred to sow panic among the enemy, throw them into confusion, and then strike.
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Role in the plot. Under Starscream's orders, Blackout participated in an attack on a military base in Qatar, where he attempted to access the computer system. He later joined other Decepticons in a mission to find the Allspark and Megatron. In the final battle in Mission City, Blackout attempted to aid Megatron in his fight against Optimus Prime, but was destroyed by a military airstrike.

Bonecrusher
In the Transformers films, Bonerip (dubbed Thunderer in Russian) is depicted as a gigantic, enraged Decepticon, one of the most powerful fighters. He is loyal to Megatron and acts as a brute force, not hesitating to ram and crush anything in his path.
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Frenzy
Frenzy (also known as "Wild" in the Russian dub) is a small but extremely ferocious and obsessive Decepticon. His essence is a thirst for destruction and chaos; war is his source of energy ("war has replaced oxygen for him"). He displays a feral fury in battle, capable of causing earthquakes with the hammers on his hands. His weapons are sonic attacks (drums in his torso create a sound of up to 200 decibels, disrupting machinery) and shuriken. At the same time, Frenzy is narcissistic, prone to overestimating his abilities, and often acts impulsively, which creates tension even among his comrades.
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Sunstorm (Stormfront)
Sunstorm is the leader of the Dinobots, giant insects, and one of the last Decepticons. His personality combines strategic cunning and brutality. He is pragmatic and willing to do anything to achieve his goals, often employing cunning tactical maneuvers.
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Trigger
Trigger, who transforms into a tank, is a cool-headed and calculating fighter. He's not prone to impulsive actions, preferring measured decisions. His strength lies in discipline and the ability to use his technical capabilities wisely.
Straxus
Straxus is the leader of the Terrorcons, a special Decepticon unit composed of monsters. He is characterized by cold calculation and pragmatism. He does not hesitate to use the most dangerous and unpredictable creatures in combat, making him an extremely dangerous opponent.
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Scorpion
Scorponok is a giant scorpion and one of the most dangerous fighters. His main traits are cruelty and a thirst for power. He proclaimed himself leader of the Decepticons, sending the wounded Megatron into exile.

Almost nothing is known about Airachnida's life before the Cybertronian Wars, but it is assumed she is a descendant of the ancient Cybertronian aborigines. During the war, she joined the Decepticons and rose to the rank of officer, becoming the chief interrogator of Autobot prisoners. Her methods were ruthless: for example, after capturing the Autobot Arcee and her partner, Tailgate, she killed the latter in front of Arcee to force her to reveal the Autobots' plans.
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After the devastation of Cybertron, Airachnida left the military and became a trophy hunter, collecting the heads of sentient beings. Traveling the galaxy, she ended up on Earth, where she encountered Arcee and the human Jack Darby.
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Key character traits: cunning, selfishness, composure, and ambition. She is willing to do anything to achieve her personal goals, not hesitating to betray her allies.
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Abilities and Alt Forms
Eirachnida is a unique "tri-mode" creature, meaning it can transform into several forms:
Spiderbot: Her original form, with her torso, arms, and head remaining intact.
Multi-role Reconnaissance and Attack Helicopter: She scans a military helicopter (a stylized RAH-66 Comanche) and gains this mode.
Subterranean Worm: In this form, she is able to move quickly underground.

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Her arsenal includes:
a super-strong web that she releases from her hands;
poison produced by glands in the body;
palm-mounted blasters;
sharp blades on the limbs.

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Special abilities: Infrared vision, allowing him to see through matter, and telepathic links with the Insecticons, giant insect-like Transformers.
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Key plot points
Conflict with Arcee: Their feud began when Airachnid killed Tailgate in front of Arcee, trying to break her will.
Conspiracy with the MECHANOIDS: To take revenge on Arcee and Je

Quintessa is a powerful and cunning alien sorceress and the main antagonist of Transformers: The Last Knight (2017). She is the self-proclaimed "Prime of Life" and claims to be the creator of the Cybertronian race, including Optimus Prime. However, her words are likely false, as the Knights of Iacon explicitly state, dubbing her "The Great Deceiver."
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Who is Quintessa?
According to her, 65 million years ago, she and other "Creators" arrived on Earth during the time of the dinosaurs and cyberformed it, leading to the extinction of many species. She later created the Knight Sentinels and, presumably, Optimus Prime. She wielded a powerful Staff of Power, capable of draining the energy of planets.
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However, the knights suspected her of sinister intentions: she intended to use the staff to drain Earth's energy, mistaking it for Cybertron's dormant ancient enemy, Unicron, and thus restore their home planet. Rebelling against her, the knights stole the staff and hid it on Earth.
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Millennia later, when Cybertron was devastated by war, Quintessa returned. She restructured the planet, directing it toward Earth, and created an army of Infernocons to aid in its recovery. At some point, she formed an alliance with Megatron, reformatting him into a body resembling the Dark Knight.
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Objectives and methods
Quintessa's true goal was to destroy Unicron and restore Cybertron using Earth's energy. To do this, she needed the Staff of Merlin. She brainwashed Optimus Prime, turning him into Nemesis Prime, and ordered him to find the artifact. The staff eventually fell into her hands thanks to

Sentinel Prime is a direct descendant of Primus, the first Cybertronian. During the difficult times following the fall of the Dynasty and the depletion of the Allspark on Cybertron, he assumed the title of Prime. He gathered the planet's best scientists, including Wheeljack, and together they discovered a way to recharge the Allspark, bringing peace to Cybertron.
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He proclaimed the principle: "Freedom is the right of all living beings," which became fundamental for Cybertronian society.
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Over time, he became disillusioned with Optimus Prime, leading to a secret alliance with Megatron. He considered Cybertronians a superior race to humans and was willing to sacrifice even all of humanity for the good of his home planet.
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In the animated series, Sentinel Prime is often portrayed as a comical character: arrogant, snooty, cowardly, and not particularly intelligent. In the film, however, he is presented as a strong and courageous warrior.
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Role in the plot
In the film universe, Sentinel Prime is the main antagonist. After betraying the Autobots and allying with the Decepticons, he attempted to save Cybertron by using space bridge technology to move the planet into Earth's orbit. However, his ship crashed on the Moon, and he was placed in stasis.
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Later, Optimus Prime activated Sentinel using the Matrix of Leadership. During the events of the film, Sentinel defeats Optimus twice, but at the crucial moment, Megatron intervenes. Under the guile of Carly Spencer, the Decepticon leader believes Sentinel is merely pretending to be his ally, but in reality, intends to strip him of his power. Megatron attacks Sentinel and offers Optimus a truce, but Optimus refuses, kills Megatron, and then finishes off the traitor.
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Some abilities and weapons:
double-bladed sword;
cybertronium shield;
rocket launcher with corrosive effect rockets (

The Fallen is an ancient Transformer from the Transformers film universe who actually has ties to the Decepticons. I'd say he wasn't formally the faction's original leader, but in the story, he became its supreme leader and is considered the founder of the Decepticon movement.
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Who is he?
The Fallen was originally known as Megatronus Prime. He belonged to the line of Primes—the most ancient and powerful Transformers born of the All-Spark. Along with his brothers, he traveled the galaxy, searching for sources of Energon and exploring the universe.
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The Primes once imposed a ban: it was forbidden to destroy stars in systems harboring life. But the Fallen violated it. Arriving on Earth around 17,000 BCE, he assessed the Sun's energy resources and decided to destroy it, even though this would also destroy Earth. He placed a device (the "Star Extinguisher") on the site of the future Great Pyramid of Giza.
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The other Primes opposed the plan, and war broke out. The Fallen won the war, but was unable to activate the mechanism: the brothers hid the Matrix of Leadership (the key to the system) and locked it away. After this, the Fallen lost the right to be called a Prime, his name was forgotten, and he became known only as "the Fallen."
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Later, according to one version, he was imprisoned in a spatial "pocket" (for example, on Phobos, a moon of Mars), from where he was freed by Megatron. The Fallen became his mentor, and the Decepticons obeyed him.
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Role in the film "Transformers: Revenge of the Fallen"
It was Fallen who became the main antagonist of the 2009 sequel. He returned to complete what he had long ago begun: finding and activating the "Star Harvester" hidden on Earth. To do this, he needed the Matrix of Leadership.