Superman is an ongoing American comic book series featuring the DC Comics superhero Superman as its protagonist. Superman began as one of several anthology features in the National Periodical Publications comic book Action Comics #1 in June 1938. The strip proved so popular that National launched Superman into his own self-titled comic book, the first for any superhero, premiering with the cover date summer 1939. Between 1986 and 2006 it was retitled, The Adventures of Superman, while a new series used the title Superman. In May 2006, it was returned to its original title and numbering. The title was canceled with issue #714 in 2011, and was relaunched with issue #1 the following month which ended its run in 2016. A fourth series was released in June 2016 and ended in April 2018, while the fifth series was launched in July 2018 and ended in June 2021. The series was replaced by Superman: Son of Kal-El in July 2021, featuring adventures of Superman's son, Jon Kent. A sixth Superman series was released in February 2023.

Mister Mxyzptlk, sometimes called Mxy, is a character who appears in American comic books published by DC Comics. He is usually presented as a trickster in the classical mythological sense. Mxyzptlk possesses reality-warping powers with which he enjoys tormenting Superman or making life difficult. His portrayal has varied, with him being an outright supervillain in some media, and an antihero in others.