"Superboy: The Last Boy on Earth" was a four-part storyline that took place in issues #50-53 of Superboy (Volume 4). Written by Karl Kesel with illustrations by Tom Grummett, the storyline was inspired by the works of Jack Kirby; notably his 1970s sci-fi/adventure hero, Kamandi – the Last Boy on Earth. Kesel and Grummett re-introduced many of the characters from the original Kamandi title including Great Caesar, Prince Tuftan and Doctor Canus. Like the Kamandi title, "Superboy: The Last Boy on Earth" borrows many elements from the 1968 film Planet of the Apes.