Thrasher is a fictional character from the G.I. Joe: A Real American Hero toyline, comic books and cartoon series. He is affiliated with Cobra as the Dreadnoks' Thunder Machine driver and debuted in 1986.
Thrasher was spoiled as a child by his middle class parents, who never disciplined him in fear that this would "stifle energies he might need later in life". They never denied him anything he asked for, no matter how many times those things wound up causing some type of destruction or major disaster. After his parents were crippled in a car wreck, which may or may not have had anything to do with Thrasher's repair work on their brakes, this "wild child" wandered into the swamps where he could do what he pleased. There he met Zartan and the Dreadnoks, who welcomed him in as one of them. But even by Dreadnok standards, Thrasher is pretty low, almost deriving pleasure from inflicting misery and suffering on others.