Jemma Simmons is a Marvel Comics character that originated from the Marvel Cinematic Universe. She is a biochemical agent of S.H.I.E.L.D.
Jemma Simmons was recruited by Phil Coulson alongside Leo Fitz to help him for his faction of S.H.I.E.L.D.
Elizabeth Henstridge has played Simmons in all her appearances in the MCU and other media.