ONE PUNCH MAN: The Strongest Metal Knight joins the pool in limited time from 1/9 - GamerBraves
someone has probably noticed this before but the I still got to point out that these robots that zombi man fought in the monster association look like Metal Knight [chapter 100&101] :
Onepunch Man 26 Raws | One Pixel Jump
Saitama VS Robot | One punch man chapter 172 fan animation - YouTube
It's been a while since I painted opm, did you miss me? I bet not xd. Chapter 172 colored. : r/OnePunchMan
Cosplay Amazing Robot OPM
One Punch Man: New villain has an edge on Saitama that nobody ever had