Another Superman villain is introduced in Superman #127 (Dec 1958): Titano! Yes, we clearly needed a “super-ape”. Chimp goes into a rocket / spaceship, is exposed to two meteors (uranium and kryptonite) and comes back grown to enormous size and sporting kryptonite vision. A “certain spin” sends Titano across the time barrier into the past when dinosaurs existed… now he’ll be happy!