Top Definition
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 02, 2004
1 more definition
Rex, the one metal gear that everyone will remember. Solid Snake also pilots Rex and defeats Liquid Ocelot's Ray USING REX. Most epic battle ever.
...Did Metal gear Rex just beat ray?

Yes, yes he did.
by sergetrigger August 02, 2008

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