It's worth pointing out that his powers are different in every story after Hit #25. Instead of the historical figure switching places with the Kid, the figure is summoned to fight alongside him.

Bio:
While on a Merchant Marine vessel at the height of World War II, an orphaned kid is blown out of the water, along with everyone else on board.

He dies and goes to a place very like the conventional view of the Christian heaven.

Literally at the Pearly Gates, St. Peter hands off the new arrival to his assistant, an old man checking names of incoming arrivals off a list. This guy, Mr. Keeper, is the secretary, or the one who "keeps", the Book of Life.

And he's made a mistake. WIthout ever saying the kid's name, he notes that the kid's not on the list. He says that he's actually made a mistake. So Mr. Keeper (who could easily be read as God in humble guise) restores the kid to a state of what might be called "undead". He additionally gives him powers sufficient to right most wrongs on Earth and sends him back to the land of the living.

Notes:
Though Kid Eternity came to DC via the purchase of Quality Comics, this version got placed on Earth-S with all the Fawcett characters. Indeed, he was made a part of the Marvel Family, more or less, by virtue of the fact that he was said to be Freddy (Captain Marvel, Jr.) Freeman's brother. So, for all intents and puposes, the Quality version and Earth-S version of this character should be considered one and the same.

When the Crisis on Infinite Earths destroyed Earth-S, this version of the character presumably died, too. His death was not shown, however.

First Appearance: Hit Comics (1940) #25

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View a chronological listing of this character's appearances

Issue Appearances:
Adventure Comics (1938)