Crowbar

Crowbar is well known as a master of breaking and entering. It doesn't matter if we're talking computer systems, human safes, or enemy compounds he's got the tools and skills needed to get you in. His weapons of choice are "nanotech sentries".

Fiction
When Sentinel Prime was being retrieved from Earth's Moon, Hatchet, Crowbar, and Crankcase surfaced quietly and secretly hitched a ride on the Autobots' shuttle back to Earth. After Sentinel Prime was retrieved from Earth's Moon and reactivated, Megatron put into motion the plan that had been waiting in the wings for hundreds of years. With the human Sam Witwicky believing that the Decepticons wished to capture Sentinel and force him to use the control pillar to activate his space bridge, Crowbar, Crankcase and Hatchet were sent to pursue the Autobots. Crowbar closed in on Seymour Simmons' car, transformed, reached in and tossed the former Sector Seven agent behind him as he bounded ahead to knock over a highway sign for the other two to use as a ramp. However, despite their best collective efforts to slow down the Autobots, Hatchet was quickly destroyed, and the remaining Dreads were soon confronted by the Autobot heavy-hitter, Ironhide, who stopped them in their tracks with a head-on collision. Faced with Ironhide's heavy weapons and Sideswipe, the Dreads seemingly capitulated by dropping their ranged weapons, but as soon as the Autobots followed suit, deployed spears to attack their enemies. Though Crowbar's spear found its mark, embedding itself into Ironhide's shoulder, Sideswipe tossed the Autobot veteran his discarded blaster, which he used to shoot the Decepticon in the face as Crowbar leaped to attack. The mortally wounded Dread was shortly after finished off by Sideswipe.