Half-human and half-machine, Jemma Simmons fights the good fight as an agent of S.H.I.E.L.D.

Pure Biology

Born in England to a high-level business executive and his wife, Jemma Simmons excelled in the pursuit of biology while in school and settled upon the ever-expanding field of xenobiology as her specialty. Upon graduation, she applied to work for the American intelligence organization S.H.I.E.L.D. and was welcomed into its ranks as an agent. Unfortunately, though Simmons loved her work with S.H.I.E.L.D., while on a mission she was exposed to a substance that led to her becoming a cyborg in order to save her life.

Simmons Stats

Before having organs and other body parts replaced with high-tech mechanical and computerized substitutes, Jemma Simmons exhibited normal human strength and endurance. Now as a cyborg, her strength has been augmented to super human levels that allow her to lift abnormal weights and even break through metal and other dense materials. In addition, Simmons’ body can now stand up to stress well beyond that of a regular human.

Simmons’ intelligence clocks in at a high-degree and her knowledge of biology is of a superior caliber. She has been trained as a capable S.H.I.E.L.D. field agent and operates well both under orders and on her own, but has been described as being overly sentimental in personal situations.

Associates and Allies

Jemma Simmons has formed close ties to her fellow agents, including Phil Coulson, Melinda May, Leo Fitz, and Daisy Johnson, as well as being open to working alongside costumed individuals during S.H.I.E.L.D. missions. In particular, she feels a very great appreciation for Henry Hayes, the cyborg codenamed “Deathlok.” It was his swift action in replacing her failing body parts with cybernetic substitutes that saved her life.







Universe, Other Aliases, Education, Place of Origin, Identity
  • Universe

  • Other Aliases

  • Education

  • Place of Origin

  • Identity

Mission Files

When S.H.I.E.L.D. discovered that the Asgardian Heimdall somehow fell under the sway of a terrestrial terrorist group after losing his magical sword to its leader, Jemma Simmons operated as part of Phil Coulson’s team to investigate the matter. Working to free Heimdall from the influence of an alien mineral, Simmons gathered up the fragments of it left after the event. She moved them to a S.H.I.E.L.D. facility for her and fellow agent Leo Fitz to examine in greater detail.

A later mission to shut down a so-called “DNA bomb” constructed by Advanced Idea Mechanics, known as A.I.M., brought Simmons into close contact with its unknown components. Realizing the material had somehow adversely affected her, she ran a full biological screening of herself and came to the conclusion that she was rapidly dying of a peculiar form of cellular necrosis. In addition, there seemed to be no known cure for her deadly condition. Soon after the Super Hero Luke Cage noticed Simmons’ state, yet did not recognize the reasons behind it.

Not long after being confronted by Deathlok about her situation, Simmons fell into a coma as death approached. S.H.I.E.L.D. agent Mockingbird and Deathlok worked together to assess the deterioration and decided to operate on Simmons to preserve what life still remained in her. Upon waking after the surgery, she discovered she’d been transformed into a cyborg. Due to her confusion surrounding her new status, she lashed out violently at everyone around her until subdued by S.H.I.E.L.D. agents.

Simmons ultimately accepted her cyborg self as the only solution to her condition and went back to work a valued member of the S.H.I.E.L.D. team.