Dragon Ball, One Punch Man Recommendations
Both anime focus on a very strong protagonist, who usually defeats his enemies with ease. They have a lot of action and fights, but also a lot of lighthearted comedic moments. The character design is also somewhat similar, especially the first villain that Saitama faces, who looks like a blue Piccolo.
-Both animes are focused on extremely strong protagonists that manage to defeat their opponents with ease.
-Both anime has a lot of humor.