Charles McNider

Doctor Charles McNider, the son of two immigrants, studied diligently to put himself through medical school. After enjoying a successful career as a doctor, he was blinded in a mishap involving the mafia.

He soon discovered his vision was enhanced in the night....

JSA

Doctor Mid-Nite served as a direct inspiration for two other heroes, though neither were powered-- Midniter, the costumed vigilante, and Tim Drake when he temporarily held the mantle of Red Robin.