Farley Stillwell is a fictionalcharacter appearing in American comic books published by Marvel Comics. He is a scientist best known for transforming Mac Gargan into the Scorpion.

Stillwell first appeared in The Amazing Spider-Man #20 and was created by Stan Lee and Steve Ditko.

When J. Jonah Jameson first hired Peter Parker, he was amazed at how he managed to obtain pictures of Spider-Man. He hired private investigator Mac Gargan to look into this. When Jameson saw an article about inducing animal mutations into humans, he visited the scientist that established this experiment: Dr. Farley Stillwell. Jameson first thought Stillwell was a crackpot, but later saw him as an opportunity to take down Spider-Man. When he first went to see Dr. Stillwell in his lab, Jameson had him experiment on Gargan. Stillwell gave Gargan a high-tech scorpion-suit, and the Scorpion was born.^[1]

Shortly after the experiment, Stillwell ran some tests and found that his experiment wasn't a true success. He discovered that Scorpion would lose his sanity as he got stronger. Creating an antidote, Stillwell headed to where Spider-Man was fighting the Scorpion. Upon learning the side effects of the formula from Stillwell, Scorpion didn't want to lose his powers and climbed up a building. Stillwell went up after him and lost his grip. As he fell, Dr. Stillwell threw the serum at Gargan in a vain attempt to cure him. He missed and fell to his death.^[1]

It was later revealed that he had a brother named Harlan Stillwell who used the experiment to create the Human Fly after being held at gunpoint by Richard Deacon. After Richard became the Human Fly, he shot Harlan.^[2]

The Stillwell brothers' technology would also later be used to give superpowers to the Answer,^[3] and the fourth Vulture.^[4]

• In the House of M reality, Stillwell appears in a flashback as one of the scientists (along with Jonas Harrow and Michael Morbius) who experimented on Luke Cage.^[5]

• Dr. Farley Stillwell appears in the 1960s Spider-Man animated series, voiced by Tom Harvey.^[6] In the episode "Never Step on Scorpion", he is hired by J. Jonah Jameson to transform Mac Gargan into the Scorpion. In "Sting of the Scorpion", Scorpion arrives at Stillwell's lab and drinks a serum that increases his strength and size, trashing the lab in the process.
• Dr. Farley Stillwell makes a cameo appearance in The Amazing Spider-Man episode "Wolfpack". His name tag confirms this to be the case.
• Dr. Farley Stillwell appears in Spider-Man: The Animated, voiced by Michael Rye.^[7] In "Sting of the Scorpion", J. Jonah Jameson hires him to turn Mac Gargan into the Scorpion. Gargan later demands that Stillwell restore him to his former self, only for the scientist to reveal that he is unable to, which leads to him being knocked out and hospitalized. In a flashback in "Make a Wish", Stillwell was the scientist that led an experiment involving neogenic research,^[8] which led to Peter Parker becoming Spider-Man. In "The Final Nightmare," Stillwell is abducted from the hospital by the Scorpion and taken to his lab so that he could reverse Scorpion's mutation using the Neogenic Recombinator, at the same time Spider-Man, Dr. Curt Connors, and Vulture are there. While a fight ensues between Spider-Man, Vulture, and Scorpion, Stillwell plans to destroy the Recombinator more monster like the Scorpion from being created.^[8][9] Connors tries to intervene saying that it would help cure him, before transforming into the Lizard and attacking Stillwell. While Spider-Man defeats the Lizard, Stillwell overloads the Recombinator's transfomer, causing it to explode. Stillwell later explains to Connors that neogenic research is too dangerous and states that its secrets will stay with him forever. He then vows to disappear, never to be seen again.

• An evil female version of Dr. Farley Stillwell appears in the Spider-Man 3 video game, voiced by Nika Futterman. This version is the head of a science corporation called MechaBioCon, and captured the Scorpion when he came to her looking for a way to have his mechanical tail removed. Stillwell then used him as a subject for her experiments invloving military cybernetics and mind control, turning him into a living weapon that she has carry out her orders. She first appears when ordering Scorpion to break the Rhino out of a prison truck. After Spider-Man defeats Scorpion and frees him from the mind control, the two work together to exact revenge on Stillwell, who has hired Rhino as her bodyguard and taken Dr. Jessica Andrews, Scorpion's love interest, hostage. Upon defeating Rhino with Spider-Man's help, Scorpion saves Dr. Andrews and attempts to kill Stillwell, but is convinced not to do so by Spider-Man and Dr. Andrews, claiming that this will only make him the monster Stillwell wants him to be. As Scorpion flees, Spider-Man leaves Stillwell for the police.
• Dr. Farley Stillwell is indirectly mentioned in the 2018 Spider-Man game. In an episode of "Just the Facts with J. Jonah Jameson", Jameson blames the scientist for creating the Scorpion even though he paid for the experiment, arguing that he couldn't have known about the scientist's intentions and accusing him of lacking ethics.

• Farley Stillwell at Marvel.com
• Farley Stillwell at Marvel Wiki
• Farley Stillwell at Comic Vine
• Farley Stillwell at Marvel Appendix