Flashy Flash

Race: Human
Occupation: Superhero
Level: S-Class; Rank: 13
Affiliation: The Heroes Association
Debut: Chapter 29

Shining Flash has feminine features, sharp looking eyes, shoulder-lengthed silver hair, and a white cape with a black pin that's the shape of the stars. He has two hairpins which are also the same shape.

(Source: One Punch-Man Wiki)