In 1957, DC Comics editorial director Irwin Donenfeld held a meeting with editors Jack Schiff and Julius Schwartz in his office, asking them each to create a new science fiction hero: one from the present, and one from the future.

[6] He took on the role of the superheroic interplanetary troubleshooter to battle space pirates, alien invaders, evil scientists and other futuristic threats both cosmic and criminal, hiding his true identity beneath a transparent blue helmet and operating out of a hidden asteroid base via his spaceship, the Solar King.

Space Ranger is assisted by the only two people who knew his secret, his loyal and highly efficient beautiful blonde secretary/girlfriend Myra Mason and Cryll, a pink shapeshifting alien who he discovered in suspended animation beyond the orbit of Pluto.

In an alternate reality created by the absence of Superman, Batman, and Wonder Woman, Space Ranger is a member of the League, a group of vigilantes hunted by Earth's registered superhumans.

[13] In the "Without You I'm Nothing" short story written by Evan Dorkin and drawn by Steven Weissman, Cryll is one of a number of ex-sidekicks living on Skid Row, alongside Zook, Ace the Bat-Hound, Proty, and Doiby Dickles.