This is the SS-Infernator (SS means "Skynet's Sentinel"). His armor is made of mysterious artificial metal called "infernium" which is much more hard to destroy than steel, titanium or wolfram.
He is a special unit guarding secret underground facility where this metal is being synthesized.
YOU CANNOT PASS, pathetic human.
Terminator universe & concept (c) J.Cameron,
SS-Infernator (c) my silly technophilic fantasy ^.^ (my preccious blackmetal cutie... *hugs and kisses* )