Jackal

Origin - Amazing Spider-Man #149

by Ross Andru, 1975

From the first day Miles Warren saw Gwen Stacy, he admired her from afar claiming to think of her as the daughter he never had. When she died, something within Warren died too. The day after Gwen Stacy's death, Warren's assistant Anthony Serba used a cloning technique to develop a living frog. This gave Warren an idea.

He gave Serba a tissue sample from Gwen Stacy to try to clone. A month later, Serba realized that the clones were human and insisted that they be destroyed. This drove Professor Warren over the edge, and he killed Serba. Even as he disposed of the body, he insisted to himself that he couldn't have killed Serba. Overhearing the name in a lecture, Prof. Warren decided that the Jackal killed Serba, not him.

Over the next several months, Warren cared for the clones, designed his Jackal costume and equpiment, and train himself athletically. Finally, Gwen Stacy's clone emerged from her clone casket, and the Jackal took it upon himself to re-educate her while promising to destroy the man who killed her: Spider-Man.