Originally one of Spider-Man's less popular rogues, the character rose to prominence after becoming one of the first in the Marvel Universe to master cloning technology, and creating various clones of Spider-Man, like Ben Reilly and Kaine Parker, as well as of other characters, including himself. The Jackal was introduced in The Amazing Spider-Man issue #129 (February 1974), but his human identity was not revealed until issue #148 (September 1975). Although the Jackal initially didn't possess any superpowers, he later gained enhanced strength, speed and agility by mixing his genes with those of a jackal. To this end, he trained himself in martial arts, and created a green suit and gauntlets with claw-like razors. Following Gwen's death, Warren, driven mad with grief and jealousy, created his Jackal alter-ego to seek revenge on Spider-Man, whom he blamed for the tragedy. Later storylines established him as also being a scientist researching genetics and biochemistry, and revealed an unhealthy limerence he had developed for one of his students, Gwen Stacy.

The original and best known incarnation, Miles Warren, was originally introduced in The Amazing Spider-Man issue #31 (December 1965) as a professor at the fictional Empire State University. Most are enemies of the superhero Spider-Man. The Jackal is an alias used by several supervillains appearing in American comic books published by Marvel Comics. Jackal: The Amazing Spider-Man #129 (February 1974) Miles Warren: The Amazing Spider-Man #31 (December 1965) The Jackal, as he was originally depicted, on the panel from The Amazing Spider-Man #146 (July 1975).

Jackal definition