King Cobra was the leader of the Cobra Gang, a criminal organization that operated in Gotham City. King Cobra and his gang tried to steal technological equipment, but were confronted by the local vigilantes Batman, Robin, Batwoman and Bat-Girl. With their combined forces, the Bat-Family was able to capture the Cobra Gang and King Cobra himself was taken down by the young Bat-Girl.
- This version of King Cobra, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 2 Appearances of King Cobra I (Earth-One)
- 2 Images featuring King Cobra I (Earth-One)
- Quotations by or about King Cobra I (Earth-One)
- Character Gallery: King Cobra I (Earth-One)