Then came the day when Luthor stopped trusting intermediaries and sought to eradicate the Kryptonian menace with his own hands. To do so, he knew he'd need a means to counteract the alien's powers and invulnerability. He gathered all the green kryptonite he could muster to power an armorsuit design stolen from his Stark Industries competitor, and upgraded it with his own ingenuity.
With five crystals totaling 17.4kg, the armor is capable of generating a static warp field that separates him from the rest of the universe, blunting the alien's vast strength and eyebeams. The two largest crystals at his shoulders are used primarily for suit power. The two smaller crystals at his elbows power the wrist-guns, which can emit kryptonite-irradiated plasmabolts, or can be configured to shave needles off the crystals to shoot at the alien for more devastating impact. The single chest crystal is used as an emission weapon for when Luthor has the alien in his grip, firing a gamma-frequency laser beam through the crystal for the fatal blow.
LexSuit Luthor is an MU Adam Warlock bashed with the scavenged bits from one of the IM2 Iron Armors (but hell if I know what it's named or numbered!) along with a RockBlock head because I think he's dead-on for DCAU Luthor, along with a bit of fabric for the skirt and some crystals from one of our friendly garage-casters whose name I've sadly and ignominiously forgotten. Mea culpa!