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In the entire world, Clack (Clack , 克拉克 , Клек ) is a very rare gender-neutral first name. Much more frequently, Clack is the last name as well as the forename.
Clack is also a popular name for the fictitious and mythical characters: Superman , the superhero appearing in DC Comics publications and related media, Justice League; Clark Kent , the fictional character from Smallville; Superman (Earth-One) , the incarnation of Superman that existed during the Silver Age and Bronze Age publications of DC Comics; Superman , the version of the superhero Superman from an alternate reality called Earth-Two, Action Comics and Superman , the fictional character, Kingdom Come version of Superman in the DC Comics universe, and in many other works.