Kakugo no Susume, One Punch Man Recommendations
While these two anime have different settings, both titles has a very powerful main protagonist that fights against various powerful monster opponents. They are also both action-packed anime with lots of over the top action scenes. Differences between the two is that One Punch Man is not made to be taken seriously and is actually funny while Apocalypse Zero comes off unintentionally hilarious for trying be serious. If you enjoy one, you may like the other as well.