Phantom Zone inmates Dr.. Xadu and his wife, Erndine Ze-Da, escape when a rift is created through a volcanic explosion. They capture and impersonate Jonathan and Marta Kent, pretending insanity so as to set Superboy...

Superboy #117 - Published December 1964 “Many similar universes co-exist in the same space, but in an infinite number of different dimensions! There's no limit to the variations.” - Superboy...

Superboy #78 - Published January 1960  Claire Kent, Alias Super-Sister!": Superboy is patrolling the skies of Smallville when he encounters a spaceship piloted by a woman. The spaceship is out...

Superboy #83 - Published September 1960 When a youthful criminal and his dog gain the powers of Green Kryptonite radiation from passing through a green space-cloud, they come to Earth...

Superboy #98 - Published July 1962 When con-man "Silk" Pomeroy opens the Swankhurst Academy, he and his confederate use it as a way of getting inside information on his wealthy...