system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] Who is the least virtuous/unworthy to lift and utilize Mjolnir?
gpt
Superman. He used it briefly when the Justice League teamed up with the Avengers to stop the mad Guardian of the Universe Krona from using Galactus' corpse as a weapon to destroy everything. 

It turned out that Mjolnir lowered her standards of what counts as worthy because it was an emergency, and after the battle ended Superman was no longer considered worthy.