Kobra was a short-lived ongoing series published by DC Comics from February, 1976 to April 1977. In addition to the The Joker (Volume 1), this series was one of the first ongoing titles to feature a super-villain. The title featured Jeffrey Franklin Burr as the villainous Kobra, and his twin brother, Jason Burr, who devoted himself to stopping his brother's efforts at all costs.
A story intended for issue #8 was printed in DC Special Series #1 (September 1977).
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See Also
DC published several ongoing series focusing on villains in the 1970s, including: