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4. Superman and The Legion of Superheroes

Geoff Johns is a great writer, and although his Green Lantern and Justice League runs have tons of fans, I feel his Action Comics run is incredibly underrated. To be honest, it’s better as a whole than either of the others.

His Legion of Superheroes arc is the crown jewel of that run. In it, Superman blasted into the future to see his old friends, and he found a dystopia in progress. It had been years since Superman visited the future, and a vast anti-alien sentiment had overtaken the Earth.

Earth Man, a rejected Legionnaire, had driven out much of the Legion with xenophobic sentiment, rewriting history to say that Superman was actually a human who fought against aliens. Supes showed up to help his remaining Legion friends, but he encountered a problem: Someone turned the sun red.

Without his powers, Kent first needed to be Superman in spirit. Plus, there were some all-timer Legion of Substitute Heroes in there.