My Hero Academia's fourth season has introduced a few new key characters, and one of them has been the pro hero Sir Nighteye. As Midoriya began his work study under All Might's former sidekick, fans are starting to see more of the pro hero's nuances and quirks in his personality. Although he has a powerful quirk that allows him to look at hour into someone's future, he has been hesitant to use the quirk for anything other than an absolute certainty given its terrible flaw should he misfire when using it and see a terrible death in someone's future.