Triggerhappy is an absolute basket case. You get them in the Decepticons from time to time. He's generally found talking to himself or giggling wildly. He's been that way ever since an incident at Decepticon boot camp, in which he was firing while surfing on his hoverboard, but fell off and hit his head. Nobody is sure if it's an act or if he suffered processor damage in the fall. What is known is that he pays very little attention to where he's shooting but LOVES the sound his gun makes when fired.

Triggerhappy wasn't inducted into the Mayhem Attack Squad as much as he was unceremoniously thrown into it. The other Decepticons don't even attempt to hide their contempt for him. He doesn't seem to mind either way, or even be entirely aware of what's happening around him. He's only interested in the fact that this mission will allow him to shoot things with extreme prejudice, and no consequences.