4. Billy Stole The Raptor Eggs (Jurassic Park III)
Taking a close second to Nick Van Owen for the biggest a**hole in the franchise is Billy Brennan (Alessandro Nivola), Alan's young sidekick who ill-advisedly steals Raptor eggs in an effort to fund his and Alan's dig site for another decade, only for Alan to rightly tear him to shreds. Because the drama of dinosaurs roaming around keen for human flesh apparently isn't enough, the movie has to be stuffed with even more moronic characters doing unbelievably dumb things most actual humans would never attempt. Even worse is that the movie tries to redeem him by having him save Eric at the end, though most of the audience still thinks he's a total douche-nozzle.