Jeffrey Franklin Burr, a mad scientist and terrorist known as Kobra, has been a dangerous, powerful, and enigmatic villain for many years, coming heavily into contact with groups such as Checkmate, the Outsiders, the Suicide Squad and the Justice Society of America. Kobra intended to bring about the Kali Yuga on earth. He was recently killed by Black Adam. (JSA #51)

His twin brother, Jason Burr, whom Jeffrey had killed, was resurrected by the Kobra cult. He set about destroying all those who had taken Jeffrey as their savior.

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