Ezekiel Shecktor was a renowned medical researcher.
Ezekiel Shecktor hired the reformed ex-convict Klaus Voorhees as his lab assistant. At the side of the scientist, Voorhees learned a great deal about serpents and chemistry while growing increasingly envious of his professor. At the peak of his jealousy, Voorhees used an irradiated cobra to poison and kill Shecktor. To mask his crime, Voorhees allowed the cobra to bite him as well, but used an experimental anti-toxin to counteract the venom. As a result, Voorhees gained powers similar to those of a cobra.
- Klaus Voorhees - Lab Assistant and Killer