Jackal

Dr. Miles Warren began his career as a highly respected professor of biology at Empire State University, where he taught students like Peter Parker and Gwen Stacy. His life took a dark turn when he developed an unhealthy, unrequited obsession with Gwen. When she was killed during a confrontation between Spider-Man and the Green Goblin, Warren’s psyche shattered. He blamed the wall-crawler for her death and turned his scientific genius toward the forbidden field of human cloning. He adopted the persona of the Jackal, a creature that scavenges and thrives on the remains of others, mirroring his own habit of stealing DNA to fuel his experiments.

Warren’s mastery of genetics was further refined under the tutelage of the High Evolutionary on Mount Wundagore. However, his ethics proved too volatile even for that advanced society, and he was eventually banished. Returning to New York, he launched the first of many "Clone Sagas," creating duplicates of both Peter Parker and Gwen Stacy. His goal was to psychologically dismantle Spider-Man by making him doubt his own reality. Over the years, the Jackal has "died" and returned numerous times, often through his own cloning technology, and has expanded his operations to include mass biological warfare, such as the Spider-Island outbreak where he gave nearly every citizen in Manhattan spider-powers.

Appearance: Jackal's body is covered in a green costume. Jackal's costume has green skin. He has a lean and highly muscular build. He has yellow eyes. He is bald. Two small, sharp protrusions extend outward from his temples. He has large, elongated pointed ears with pale pink inner sections. His bare chest and abdomen feature highly defined musculature. Thick veins run along the surface of his arms and legs. His hands have long fingers tipped with sharp claws. His bare feet feature pointed claws on the ends of the toes. He wears a small, tightly fitted light brown woven garment around his waist.

Personality: Dr. Miles Warren is the ultimate cautionary tale of what happens when a brilliant mind meets a crushing, unrequited obsession. He is defined by a deep-seated delusion and a predatory cunning; having named himself after the jackal—a creature he once heard described as a "cowardly predator"—he operates with a mix of academic arrogance and pathological grief. He is a master manipulator who views people as biological puzzles to be solved, discarded, or duplicated. His sanity is famously fragile, often fragmenting into multiple personas to avoid the guilt of his own murderous actions, making him as unpredictable as he is intellectually dangerous.

His most defining relationship is his obsessive infatuation with his former student, Gwen Stacy, a fixation so potent that her death drove him to shatter the laws of nature just to "bring her back." He views Peter Parker (Spider-Man) as the architect of his misery, blaming him for Gwen’s demise while simultaneously coveting his unique genetic potential. This obsession birthed his "children"—Ben Reilly and Kaine Parker—Peter’s clones whom he treats with a sickening mix of parental pride and abusive experimentation. He also shares a competitive, antagonistic history with the High Evolutionary, his former mentor who banished him for his unethical biological "shortcuts."

Miles Warren is a psychological and scientific powerhouse whose genius level intellect in biochemistry, genetics, and cloning makes him one of the most dangerous manipulators in the world. While he is best known for his ability to replicate human life, he is also an unexpectedly formidable physical threat, possessing the skills of a high level martial artist and a master gymnast. This combination of mental brilliance and predatory agility allows him to outmaneuver opponents both in the lab and on the battlefield. He supplements his biological warfare with advanced gadgets and state of the art laboratory equipment, ensuring that he always has the technological edge required to facilitate his twisted experiments.