Blackout flew into the airspace of US SOCCENT Forward Operations Base in Qatar and refused to identify himself, prompting base commander Colonel Sharp to dispatch two F-22 Raptors to escort the Decepticon into their base. One of the Raptors reported that Blackout had the registry number of 4500X on his vertical stabilizer, the number of the helicopter Blackout had scanned and destroyed three months earlier in Afghanistan.
Once landed, Blackout was surrounded by the soldiers stationed at the base and ordered to power down and disembark his crew, or deadly force would be used. Seeing no reason to hide himself any further, Blackout transformed under a hail of automatic weapons fire from the shocked humans. Activating his heavy machine guns and rocket launchers, Blackout made quick work of the soldiers closest to him, then unleashed a massive shock wave that killed the rest of the troops and shattered their vehicles and the windows of the operations control tower. Blackout made his way around the base, tossing tanks aside, crushing soldiers underfoot and blowing up aircraft. Eventually, he reached the operations bunker and tore off the roof to link up with their server and download its files in an attempt to find information on Project: Ice Man. Unfortunately, the base commander intervened, cutting the physical hard line of the server, severing Blackout's connection and thwarting the primary objective of his mission. Still, Blackout carried out his second objective - the destruction of the human base. As he proceeded, a human soldier was nearly crushed. Instinctively, the soldier recorded images of Blackout, the Decepticon indulging this brief moment of curiosity by looking straight back at the human. Blackout then activated a chest-mounted laser cannon to put the fleshling out of its misery, but before he could do so, he was struck by a grenade fired by another soldier, and the human made his escape. Enraged, Blackout fired flare countermeasures into the sky to confuse any other attempts to attack him, then ejected Scorponok from his back and sent his minion to track the fleeing soldiers. Blackout then turned his attention and his weapons back to the rest of the base, eventually destroying it, leaving no survivors.
Evidently, after the attack, Blackout flew back to the United States, as he was in the vicinity when Frenzy reported the discovery of All Spark's location and Starscream ordered their forces to mobilize. Blackout was the last to acknowledge the order, then rallied in Megatron's name, perhaps to remind Starscream who his master was.
Blackout arrived at Mission City just as the final battle was getting underway. Megatron's order of "Decepticons attack" must have been music to his ears, and he followed his master's commands whole heartedly. He attempted to block ladiesman217's path as the boy was trying to get away with the All Spark, before he was attacked by Ironhide. The Autobot threw a car at Blackout, who fired his laser cannon to destroy the vehicle and knock Ironhide over. He flew ahead of ladiesman217, attempting to use his rotor weapon to kill him, but the human managed to dodge this attack.
Blackout withdrew from the battle for a few moments, but returned as Optimus Prime and Megatron fought. Seeing his master under attack, Blackout came to the defense of his lord by activating his hand-held rotor weapon, but soldiers—including survivors of the SOCCENT base attack—attempted to stop him by painting him with targeting lasers for friendly F-22 Raptors to fire upon. As Blackout activated his cannon, he noticed the lasers targeted on him. Underestimating the fighting spirit and desire for vengeance of the humans, Blackout tried to finish them off until Captain Lennox, using an abandoned motorcycle, charged at him and fired a sabot round into his crotch (ouch), as F-22s pounded the Decepticon with missiles, extinguishing his spark.
His remains were dumped in the second deepest part of the ocean - the Laurentian Abyss - along with his fellow dead Decepticons.
- Blackout will appear in Thomas and Twilight Sparkle's adventures of Transformers.
- Blackout did not speak any English in the film. He does, however, speak his native Cybertronian language. He only spoke English in the video games.
- A Transformer who looks physically identical to Blackout appears in Revenge of the Fallen and is a main character/antagonist in the game based on it. It has been debated whether they're the same Transformer, but it was usually settled for them to be two separate bots, and this bot has been named Grindor.
- Blackout was originally supposed to be named Soundwave but was particularly dropped due to that Soundwave hadly resembles his classical appearance.