His mother was never clearly established.

Long forgotten, he and his pal returned in the pages of Infinite Crisis #6. It was here that an Earth was assigned to him.

From this appearance, two possibilities emerge.

One is that the Silver Age character was, as World's Finest had suggested, a mere electronic phantasm. The stories involving him thus never actually happened anywhere, anywhen.

The other is that all the stories involving him, except for the last one, did in fact occur on Earth-154, while his last two appearances (the narratively-linked "Town of Timeless Heroes" and "The Final Secret of the Super Sons") took place on Earth-1, where he only exists as a computer simulation.

Given DC's Silver Age insistence that the "real" events on Earth-2 occurred in the comic books of Earth-2, this supposition seems entirely consistent with the way DCU's multiverse works.

In any event, Earth-154 is the only Earth where this character has ever been posited to be "real".

Notes:


First Appearance: World's Finest Comics (1941) #154

View a chronological listing of this character's appearances

Issue Appearances:
Action Comics (1938)