1 definition by HeinousDude
A huge motherfucking nuclear equipped death mobile that shoots warheads. It is designed to be a stand alone operational vehicle. Generally bipedal and really fucking scary when it's just you by yourself and you have to duke it out with one of them.
The first time I fought Metal Gear Rex I was like HOLY FUCKING SHIT HOW THE HELL AM I SUPPOSED TO BEAT THAT THING?!
by HeinousDude February 3, 2004