Superman #5

In "Gladiator," Superman faces off against the brutal Mongul on the war-torn planet of Kriegswelt, pushing his limits in a fight that tests both strength and resolve. With the help of a mysterious priest and the Eradicator’s power, Superman is teleported to safety—only to find Jimmy Olsen confronting a strange figure who looks exactly like Clark Kent, raising unsettling questions about identity and memory. Written by Roger Stern and illustrated by Kerry Gammill, with inks by Dennis Janke, colors by Glenn Whitmore, and letters by Ulrich Warda, the cover by Gammill and Janke captures the intensity of the clash.