Glasses

Glasses is the B-Class Rank 20 professional hero for the Hero Association. He is part of the Blizzard Group, a group of B-Class heroes led by Fubuki.

[Spoiler] Glasses is one of the few professional heroes aware of Saitama's true strength, after witnessing him easily destroy a monster that even Tatsumaki could not deal with. This encounter changed Glasses' perspective on heroism and led him to leave the Blizzard Group in order to pursue strength of his own. [/Spoiler]