One Punch Man — Episode 12

The story focus shifts from Saitama to the evolution of the "Hero Hunter," Garou.

This episode is widely considered the "gold standard" for the series.

In the One Punch Man universe, "Episode 12" refers to the high-stakes finale of each season. Depending on which season you're watching, the "good story" shifts from Saitama's ultimate cosmic duel to deep character explorations of his rivals. Season 1, Episode 12: "The Strongest Hero"