CATSEYE Clarissa Cummings was dying of a rare illness even her father, a famous physician, was unable to treat. Her father had recently saved the lives of the EPHESIANS. They were dying from the effects of our polluted environment. He developed a serum from BLACK CAT's blood. In desperation, he used this serum on his daughter. It worked well, restoring her to full health and enhancing her physical strength and agility to super-human levels. The Ephesians took her in and trained her, giving her the code-name CATSEYE and a uniform modeled after Black Cats'.