I've never read OPM but I'm pretty sure he got a little cameo in the Invincible series : r/OnePunchMan

The Top 10 Manga Moments Of 2022 - Bounding Into Comics

kingkira96 – Page 4 – KINGKIRA'S CASTLE

Isekai Maou to Shoukan Shoujo Dorei Majutsu - Novel Updates

Manga Spoiler] The Number 1 is back for another badass cameo

More discredit to @JamesFirstTake I'm BEYOND done with this child

This SECRET CAMEO in Invincible Season 2.. #cartoon #comics

Saitama, CF Garou, Invincible, and Thragg vs Superman and Sentry

Do people die in this panel? : r/OnePunchMan

Untitled on Tumblr

I don't know if this is an unpopular opinion or not. Lots of

What is Saitama's true power and what are his limits in the anime

kingkira96 – Page 4 – KINGKIRA'S CASTLE

kingkira96 – Page 4 – KINGKIRA'S CASTLE

One Punch Man – A Hero Nobody Knows (PS4) reviewed. - The Technovore