619 – Luthor’s First Power Suit

A panel from Superman #106, May 1956
A panel from Superman #106, May 1956

In Superman #106 (May 1956), Luthor invents a metallic allow that absorbs the energy Superman generates within a 100-mile radius and tricks Superman into performing several impressive super-feats to charge up the suit. Luckily Superman gets wise and fishes out some kryptonite to drain himself, which somehow drains the battle-suit, foiling Luthor’s plans.