Source: JLA Classified: Cold Steel #1-2 (2005-2006)
Type: The real deal (since retconned)
So why am I disappointed in Superman's war machine? Beside the out-of-character blades, he's better armored and can shoot heat vision. That's it. Wonder Woman can fire her magic lasso from the robot's wrist. Batman's shoots batarangs and turns into vehicles. Aquaman's is submersible (of course). The Flash's can turn into a freakin' War Wheel. A WAR WHEEL! So yeah, Superman's is dull by comparison because it doesn't seem to have powers a giant robot wouldn't normally have. Maybe that's appropriate. He IS the baseline superhero after all, maybe he should get the baseline battlemech.
But at one point he gets schooled on strategy by Kyle. BY KYLE! That's when I knew Moeller didn't really care for our boy Kal-El. He's just there to get upstaged by the others. Sigh.