The DC Universe is a gargantuan collection of characters, factions, nemeses, and heroes. Among the factions in the DC Comics Universe rests a collection of powerful individuals known as lanterns. The concept started with the first Green Lantern, Alan Scott, who was created by Bill Finger and Martin Nodell. Soon after, Hal Jordan was brought into existence, and the Green Lantern Corps made their first appearance in Showcase Vol 1 #22 by John Broome and Gil Kane.

Whilst DC barely dipped its toes into the concepts of the Multiverse before heading into a bold new reboot with James Gunn and Peter Safrans DCU, there were some surprising faces seen across various movies. Most DC Cameos were not all that exciting and featured characters too obscure, or actors, celebrities, and politicians that feature as mere easter eggs rather than for comic fans to enjoy.