Action Comics #291

In "The New Superman!", Jerry Siegel and Jim Mooney deliver a delightfully absurd twist on Superman’s mythos, as the mischievous Mr. Mxyzptlk takes center stage with a bizarre scheme that turns Earth’s heroes and villains on their heads. With Curt Swan and George Klein’s iconic cover capturing the chaos, this 1962 classic sees Supergirl’s Kryptonian parents restored to life and the entire planet transformed into Bizarros—before Mxyzptlk sets his sights on a most unexpected match for the young Kryptonian.