Gudetama, a lazy egg yolk, is a big fan of One-Punch Man, a Japanese superhero anime and manga series created by ONE. That's why Sanrio's character wears like Saitama in our fanart Gudetama One-Punch Man cursor pack. He is a seemingly ordinary guy who becomes a superhero after a rigorous training regimen that leaves him with the ability to defeat any enemy with a single punch. Despite his incredible strength, Saitama, like Gudetama, struggles with feelings of boredom and frustration due to the lack of a worthy opponent to challenge him.