A younger Superman-esque entity featured in the DC universe. The title has been given to a handful of people over the decades, most of which are or are related to the Kent family:
Clark Kent - used the handle in some comics depicting his early days as a crime fighter.
Kon-El - A clone of Clark Kent, uses the alias during his days in the Teen Titans and Young Justice
Jonathan Kent - The Superboy of the DC Rebirth continuity. Clark Kent and Lois Lane's son.