Kancer

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Kancer is a fictional character, a supervillain in the DC Comics Superman series. He first appeared in Action Comics #777 (May 2001). He was created by General Zod from cancer cells removed from Superman's body. A vaguely humanoid green mass encrusted with calcified or crystalline growths, his powers include super-strength, speed, stamina, invulnerability, flight, and the ability to dissolve and devour other organisms.