Lightspeed Flash (閃光のフラッシュ, Senkō no Furasshu) is an S-Class, rank 13, superhero for the Heroes Association. As his nickname would imply, he's well known for his incredible speed. He assists the other heroes within the Monster Raid. Despite doing extraordinary compared to the rest of S-Class, he still was rather quickly disposed by Garou. Initially arrogant and underestimating the unimposing, B-Class Saitama, Lightspeed is greatly humbled when he witnesses the true power of "Caped Baldy."