One Punch Man, they seem relatively safe (for commoners).
Have you seen the first panel of Chapter 1 of OPM? π€£:
OPM is like, you're just minding your own business and bam, this sea king shows up to take over your world
you call for an S class hero to show up but nah, only this guy riding a bike is around
it takes 2 S-class heroes, a vigilante ninja, a bunch of fodder normie heroes then finally a bald guy to save the day
......and this is a villain that appeared in the first 20 chapters