Smile Man

 Smile Man (スマイルマン, Sumairuman) is an A-Class Superhero, rank 27.

Appearance
Smile Man is a man who wears a red body suit with a domino mask. He has a smiley face on his body suit and on his belt.

Saitama Introduction Arc
He arrives at A-City with Lightning Max to fight Vaccine Man, but is utterly defeated.

Abilities & Powers
As an A-Class hero, it can be assumed that Smile Man is a highly capable individual.

Anime and Manga Differences

 * In the manga, Smile Man did not fight Vaccine Man.

Trivia

 * Smile Man's design, especially in the anime, resembles the comedic character, Chapulín, from El Chapulín Colorado (English: The Red Grasshopper), created by the Mexican comedian Roberto Gomez Bolaños AKA "Chespirito".