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What is Superman "Kryptonite"?
(i.redd.it)
General rules:
Exceptions may be made at the discretion of the mods.
Superman has never died from Kryptonite but he has died from getting punched in the face by a big dude with boney hands.
Not quite true. In an old Legion comic, Lobo grips a shard of Kryptonite he steals from Lex Luther and punches straight through Superman's chest and heart, killing Supes. You don't mess with the Main Man!
https://dc.fandom.com/wiki/Superman_Vol_1_149