Flashy Flash (閃光のフラッシュ, Senkō no Furasshu) is the S-Class Rank 13 professional hero of the Hero Association. He is a former member of the Ninja Village’s 44th Graduation Class, nicknamed The End (終わり, Owari; Viz: The Final).

Flashy Flash is a lean but muscular young man of average height with an androgynous appearance. He has sharp blue eyes and long ice-blonde hair with bangs brushed to the right side of his face. He wears a dark blue bodysuit with metallic bracers over his arms and upper chest armor with a long white cape over it. He adorns himself with two eight-pointed stars on either side of his head and on his cape. He has a chain strapped around his waist that holds his sheath and sword in place.

Flashy Flash is a calm and serious man, immediately starting the topic of discussion at the meeting and stopping an argument between Tatsumaki and Metal Bat. He also appears to be quite arrogant, telling lower-ranked heroes to step aside and let him handle the Mysterious Being because he sees them as weak, berating them for potentially causing collateral damage. He is also very confident in his abilities.

Flashy Flash is one of the few heroes who doesn’t fear Tatsumaki, talking back to her after she insulted him, stating that she stole his kill against the Hundred-Eyes Octopus, and even went as far as to say that she is not actually stronger than him.

He has a very firm mindset that training is one of the only ways to become truly strong, as he told Gale Wind and Hellfire Flame he only became as powerful as he was through training more than any other heroes or ninja. When the two monsters were dying, they asked Flashy Flash what it was that they were missing, and his response was their lack of training. In a sense, this is similar to Saitama, as he also believes training is the only way to become truly strong.