Leo Fitz

Leo Fitz
Marvel Cinematic Universe and Marvel Comics character
Iain De Caestecker as Leo Fitz in a promotional image for season four.
First appearance
Last appearance
Created by
Portrayed byIain De Caestecker
In-universe information
Full nameLeopold James Fitz[1]
AliasThe Doctor
NicknameFitzSimmons (with Jemma Simmons)
Occupation
  • Engineer
Family
SpouseJemma Simmons (wife)
ChildrenAlya Fitz
NationalityBritish (Scottish)

Leopold James "Leo" Fitz is a fictional character that originated in the Marvel Cinematic Universe before appearing in Marvel Comics. The character, created by Joss Whedon, Jed Whedon and Maurissa Tancharoen, first appeared in the pilot episode of Agents of S.H.I.E.L.D. in September 2013, and has continually been portrayed by Iain De Caestecker.

In the series, Fitz is one of S.H.I.E.L.D.'s top scientific minds. His scientific knowledge is vast, and as an engineer and inventor he has developed many of S.H.I.E.L.D.'s staple devices and gadgets. Many of his storylines involve his relationship with his best friend, and later wife, Jemma Simmons, who are collectively known as Fitzsimmons. Over the course of the series, Fitz suffers multiple traumas and becomes aware of a darker and more ruthless side to his character. His darker alter ego is commonly known as The Doctor.

  1. ^ Cite error: The named reference Identity and Change was invoked but never defined (see the help page).