Bizarro... The Thing of Steel

While Professor Peterson is testing his new duplicating ray, Superboy arrives to see his progress. The ray is struck by lightning, and Superboy steps in front of it to stop the ray from hitting the Professor. The result of the ray is Bizarro, an imperfect duplicate of Superboy who possesses all of his powers, but a very limited intelligence. Bizarro wreaks havoc at a shopping mall and eventually takes Clark's place at the Shuster costume party under the name Kent Clark. Meanwhile, Superboy determines that he must destroy Bizarro with kryptonite. After Bizarro causes a disruption at the costume party and stops Lana on the road, Superboy uses the kryptonite on him only to discover it has no effect. Bizarro throws the rock back at Superboy and flies away with Lana in his arms. Superboy lies on the street, writhing in pain.