Clark Kent, also known by his birth name Kal-El or superhero alias Superman, is a fictional character and a superhero in the 2021 The CW television series Superman & Lois; originally developed as a part of the Arrowverse franchise of television series, first mentioned in the 2015 pilot of Supergirl, based on the character of the same name created by Jerry Siegel and Joe Shuster, and adapted for television by Glen Winter, Greg Berlanti and Todd Helbing from the previous Arrowverse adaptation of the character by Berlanti, Andrew Kreisberg, and Jessica Queller. Clark Kent had been portrayed by Tyler Hoechlin in the Arrowverse since 2016 prior to the development of Superman & Lois as a spin-off of Supergirl, in which Hoechlin reprised his role as co-headliner, initially said to be playing the same incarnation of Superman he had played in Supergirl, before the series was retroactively established to be set in its own continuity, on an Earth other from Earth-Prime, in its second season finale.

Jon Kent is a fictional character appearing in American comic books published by DC Comics. Created by Dan Jurgens, the son of Superman/Clark Kent and Lois Lane, he first appeared in Convergence: Superman #2. Jon is the newest character in the DC Universe to assume the superhero persona of Superboy, and later Superman. As Superboy and Robin, Jon and Damian Wayne appeared in several Super Sons comic book series featuring their shared adventures. Jon later takes on the Superman mantle and stars in the comic series Superman: Son of Kal-El.