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"
This episode is widely considered the "gold standard" for the series. One Punch Man Episode 12
It is a rare moment where Saitama meets someone who can survive more than one hit, even if he was still holding back. In the One Punch Man universe, "Episode 12"
Saitama faces Boros, a galaxy-conquering alien who, like Saitama, is bored because he is too strong. It is a rare moment where Saitama meets
Garou is cornered by his former master, Bang, and his brother Bomb. The battle is interrupted by the massive Elder Centipede.
The story focus shifts from Saitama to the evolution of the "Hero Hunter," Garou.