Moon Maiden (Laura Klein) is a DC Comics superhero who first appeared in JLA Giant Size Special #3 (October 2000).

After human astronaut Hugh Klein encounters the Hundred during a lunar mission, they allow him and his wife Jenny to adopt and raise the infant, who they name Laura.

After learning of her origin and purpose, Laura becomes a superhero and an early member of the Justice League.

However, she and the Centurion are erased from history after she destroys his Erasure Weapon before Hugh restores the League's memories of her.

She can also induce an effect called 'Lunar Madness' in others, which can manifest as anything from traumatic flashbacks to being driven permanently insane.