Kid Eternity is a comic book superhero created by Otto Binder and Sheldon Moldoff for Quality Comics in December 1942.
A boy who died before his time, Kid Eternity was given the ability to return to Earth (with his guardian, Mr. Keeper, the angel who messed up the books) and summon historical, legendary, and mythical figures to aid him by saying the word "Eternity!"
Kid Eternity provides examples of:
- Canon Welding: Pre-Crisis, he was unrelated to the Marvels (and his real name was unrevealed), but in the 1970s, he was retconned into being Freddy Freeman's brother. They further retconned it so that Kit had died in Freddy's place.
- Darker and Edgier: Post-Crisis, they changed his origin so that he'd gone to Hell instead of Heaven, Mr. Keeper was a demon instead of an angel, and the "historical figures" he summoned were more demons in disguise.
- Divine Misfile: The original Kid Eternity gained his powers after a freak accident of fate caused him to die over fifty years ahead of schedule. In order to restore him back to the living, the divine bureaucrats reclassified him as a superhero, which also gave him the ability to summon gods, heroes, and fictional beings.
- Only Known by Their Nickname: Kid Eternity was always just referred to as "(the) Kid," first by his grandfather and later everyone else. Eventually DC Comics got the rights to the property and did some Canon Welding with Shazam!, making him Freddy's brother with the real name Christopher "Kit" Freeman.
- Reality Bleed: This occurs when a folklore researcher witnesses urban legends actually occur in the real world.
- Soul Power: Due to temporarily winding up in Heaven too early, the Kid came back with the power to summon spirits of the dead for advice—and, for some reason, also people from mythology. He's a decidedly heroic version of this trope, though Post-Crisis he's had a Darker and Edgier reboot.
- Sunglasses at Night: For no real reason, Kid Eternity never takes off his sunglasses.
- Thanatos Gambit: Kali kills his master, Savarda, and tries to rob him of a black diamond that is said to grant its owners wealth and power, but also result in a violent death. Apparently, Savarda realized said death was going to come from Kali, sold it beforehand, and left a note in the safe where Kali thought it was hidden. Kali notes that Savarda seemed perfectly willing to allow his own murder just to screw with him.