Avtayuoty i treason

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 (

Magnus was named his successor and passed on the Matrix to him. However, Magnus was unable to open the Matrix and harness its power. He later became Chief of Staff under the new leader, Rodimus Prime.
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Other Notable Autobots
Bumblebee. One of the earliest and most popular heroes. On Cybertron, he served as a spy and reconnaissance agent. On Earth, he became a friend and vehicle for Spike Witwicky, the Autobots' first Earth ally. As a result of a serious injury, he lost the power of speech and communicates through sonic signals and fragments of songs. He later led a squad of Throttlebots—the Metroplex garrison. At the end of season three, during the "Hate Plague," he was mortally wounded but was reconstructed into a more powerful Golden Giant.
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Ratchet. An Autobot doctor and scientist. He's known for his compassion—he even heals his enemies. After the war, he remains on Earth. He transforms into an ambulance.
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Arcee. A warrior. She lost her partners and now guards a human, Jack Darby. Transforms into a blue motorcycle.
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Bulkhead. A strongman. A former construction worker, clumsy but kind. He's Miko's guardian. Transforms into a green SUV.
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Wheeljack. Demolitionist and katana master.
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Smokescreen. Newbie, passionate fighter.
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The Dinobots. A special squad of Autobots that transforms into mechanical dinosaurs. The iconic five are: Grimlock (commander, a Tyrannosaurus rex), Slug (a Triceratops), Snarl, Airages (Spitfire), and Fennec. They were created by Wheeljack and Ratchet based on discovered dinosaur skeletons.

Bravery and courage. Sideswipe is not afraid to engage in battle and is ready to fight to the end to achieve victory. In battle, he proves himself a skilled warrior and a master of hand-to-hand combat.
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Impulsive and reckless. He often acts without considering the consequences and enjoys extreme situations. He enjoys taking risks and doesn't particularly mind the prospect of getting hurt. This behavior often leads to trouble, which is why Sideswipe regularly ends up in Ratchet's care.
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Narcissism. His remarks often ooze self-satisfaction, such as the famous line, "I'm damn good!"
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A tendency toward manipulation. In some storylines, he uses cunning and deception to achieve his goals, suggesting less-than-honest methods.
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Attitude to rules and authority. Sideswipe often ignores orders and prefers to act independently, which creates tension in his relationships with his teammates. He's not particularly fond of discipline and can be rude to his superiors.
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Caring for his comrades. Despite his selfishness, in critical moments, Sideswipe is capable of brave and selfless acts to save his friends.
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Character evolution. The character's emphasis shifts across different media franchises (G1, films, Robots in Disguise). In some versions, he's initially portrayed as a rebellious teenager who learns teamwork through trials. In others, he's a more mature fighter for whom protecting Earth has become a new, higher purpose.
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Overall, Sideswipe is a complex character: he has youthful enthusiasm, courage, and serious flaws, but at the same time he is capable of real feats for the common good.

Here's a biography of Crosshairs, an Autobot from the Transformers universe. I've compiled the essentials: his past on Cybertron and how he performed in the films.
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Crosshairs
Biography
On Cybertron, Crosshairs served in Optimus's science division. When the war broke out, he joined the Autobots. He oversaw the launch of the Nemesis and later helped deliver Sentinel Prime's invention to the temple in Simfur.
When Optimus Prime devised a plan to rescue the Allspark, Crosshairs voluntarily remained on Cybertron. In his absence, hostilities continued: Decepticon patrols combed the planet, and many Autobots were killed or captured. Crosshairs managed to survive and even assembled a small force.
Later, Arcee returned to Cybertron. Crosshairs and his comrade Clocker learned from her of Megatron's death, the destruction of the Allspark, and the emergence of Starscream as the new leader of the Decepticons. He told Arcee that Elita-1 had been captured and taken to Simfur, and announced that he was preparing a rescue mission.
When the Autobots reached the Simfur Temple, they found a large force of Decepticons gathered there, awaiting the activation of the Allspark recreated by Starscream. A frontal assault was impossible, so Crosshairs suggested splitting up: he sent half of the squad, led by Arcee, to Trypticon to create a diversion and distract the enemy, while he and the other half remained near the Temple. During the battle, when Dreadwing's drones, on their master's orders, attacked Starscream and the remaining Decepticons, the Autobots took advantage of the confusion. As a result, the second Allspark was destroyed, and the Autobots escaped before Dreadwing's ship destroyed Trypticon.

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In films
Transformers: Age of Extinction. Along with the other Autobots, he hid in the Texas desert, awaiting Optimus's return. He participated in the attack on the KSI building in Chicago. When Optimus was captured by Lockdown, Crosshairs infiltrated his ship and sabotaged it. Then, in