The massive Blackout has been described as the "hound" of Megatron. In better days he was always to be found looming powerful and silent behind his leader's right shoulder. When given a target he hunts it down with fierce determination. Blackout is not happy with the progress Starscream is making towards finding the missing Decepticon leader. He suspects (quite rightly) that Starscream would prefer Megatron to stay lost. Blackout is openly mutinous and will challenge Starscream's leadership at any opportunity, not for his own sake, but to better serve his ultimate goal of finding his lost master. Blackout has a sneaky side and uses his symbiotic companion Scorponok's small size to great advantage.
Early in the film, he, along with his minion Scorponok, attacks the SOCCENT Forward Operations Centre in Qatar, disguised as a MH-53M Pave Low IV helicopter, that was apparently shot down over Afghanistan three months earlier. Blackout is escorted to the base by two F-22 jet fighters, where he transforms and single-handedly destroys the whole base. During his attack, he attempts to hack into the base's system to download data on the location of the Allspark and Megatron, only to have the hardline to the system cut off by a military officer. He then deploys Scorponok, sending him after a fleeing Captain William Lennox and his team. Later, Blackout is seen rallying with the other Decepticons to Starscream's call, after Frenzy discovers the Allspark in the Hoover Dam, saying "All hail Megatron" as if to remind Starscream who his master is.
Arriving in Mission City during the final battle, Blackout attacks Sam, who is saved by the timely intervention of Ironhide, who throws a car at Blackout, which the Decepticon blasts out of the way and then he shoots down Ironhide. Later he attempts to kill Sam with his rotor weapon, but misses him by a few feet. Towards the end of the battle he attempts to help Megatron finish off Optimus Prime; however, he is attacked by Captain Lennox and his team, with the former racing underneath him on a motorcycle and firing at him with a sabot round, along with human pilots in F-22s firing a barrage of missiles from the air, eventually killing him. His corpse is disposed of in the Laurentian Abyss, along with Megatron and the other fallen Decepticons.
Blackout also appears in Revenge of the Fallen, despite his death in the 2007 film. When Megatron is resurrected it's presumed Blackout's resurrection took place off screen. He is seen later joining the fight against Optimus Prime along with Megatron and Starscream. He is killed, this time permanently, by Optimus who gets up on the Decepticon and rips his face apart with his battle hooks, just before the Autobot gets fatally stabbed by Megatron.
ALTERNATE MODE AND WEAPONRY
Blackout transforms into an Sikorsky MH-53 Pave Low helicopter. He is armed with a missile launcher, 2 arm-mounted Gatling cannons, 2 energy cannons and has the ability to disrupt electronic devices via EMP blasts. He is also able to detach and wield his tail rotor blades as a close-combat weapon. When in helicopter mode he can simulate the appearance of a human pilot, the same holographic model (referred to as "Mustache Man" on-set and in the credits) that "pilots" Starscream and "drives" Barricade.
