Jemma Simmons

Jemma Simmons is one of the main characters of Agents of S.H.I.E.L.D.

Early Life
At some point in her life, Jemma moved from England to New York City, U.S.A. to join S.H.I.E.L.D. as a bio-chemist.

Season 1
Simmons, along with her partner Fitz introduce themselves to Agent Ward as the "techies" of the operation, with Simmons being an skilled bio-chemist and Fitz, an engineer. Simmons, Fitz and May go to the site of the burning building to investigate and Simmons finds a substance of extra-terrestrial origin and takes it back to the lab for analysis. Simmons discovers that the substance is literally dripping with gamma radiation. She also assists Fitz with the decryption of the surveillance footage from before the blast, where it is revealed that the Centipede caused the explosion. Fitz-Simmons explain to Agent Coulson that Michael Peterson will die whatever they do and he tasks them with finding a third option. After much stress, the team produce a gun-like weapon which does not kill, but only incapacitate. ("Pilot")

Gallery
Gallery of photographic stills released to promote the character.