Of all of Joker's schemes, his plan to ruin Superman's life is definitely one of his most impactful in DC Comics. In Joker: Last Laugh #5there is a nod to a classic comic, as well as a hint at a future event. This reference implies that even in the main DC Universe, Joker has been planning to carry out his darkest scheme all along — it could just be a matter of when.
Lois Lane and Superman's romantic bond is undeniable. They are one of the most popular couples in all of comics and have been for decades. Joker comes between the two of them in the 1996 Elseworlds story Kingdom Come, which has the creative team of Mark Waid, Alex Ross, and Todd Klein. In one of the Joker's most evil acts, he kills Lois Lane and the rest of the staff of The Daily Planet. This leads to Superman distancing himself from the world and the world of superheroes being altered by Magog killing the Joker following this. This occurrence implies that terrible things happening when Superman loses Lois — and Joker wants it to happen.
Related: Harley Quinn Finally Rejected Joker Over Twisted Relationship Endgame
In Joker: Last Laugh #5 from 2001, the Joker is told that he will die as a result of a brain tumor. The comic has the creative team of Chuck Dixon, Scott Beatty, Ron Randall, Gina Going, Digital Chameleon, and Willie Schubert. With the news that he is dying, Joker makes a to-do list, which Batman finds and shows to the Justice League. With nothing to live for, the Clown Prince of Crime's list includes chaos-inducing actions to take — as well as a few mundane ones. What may surprise fans is his second to last to-do item: kill Lois Lane.
In the 2013 video game Injustice: Gods Among Us, which eventually spawned a few comics and a sequel, Superman is
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