That sounds like Starcream. He's a Decepticon. Mostly. It's complicated and irrelevant. Mostly he's a robot and can disguise himself. I don't know if he's from the video game or what, but in the DS video game, you have to get behind him and kick and punch. In one of the movies, there's this AllSpark that gets shoved into another Decepticon's chest. It basically overloads his system. Theoretically, it could work on Starscream. Maybe not with the AllSpark but with some kind of electromagnetic pulse or enough wattage to electri-fry his systems.
If it's not him, he's still a robot, and it could still work maybe.