Portrayed by Iain De Caestecker
Full Name Leopold Fitz
Age 26
Height 5'8"
Build Slender
Eyes Blue
Hair Brown
Factions S.H.I.E.L.D.
Occupation Engineer, Weapons tech
Alignment Hero

Claim to Fame

Leopold Fitz is one of the brightest scientists and engineers in the world.


Outside of S.H.I.E.L.D., not much is known about Fitz outside of his home town in Scotland. Within the organization, however, he's known as one of their youngest, best, and brightest engineers. Many an agent would love to have him on the team, but you'd better not separate him from Simmons, or you'll have a mess on your hands.


Leopold "Leo" Fitz was born in Scotland, United Kingdom. His only known relative is his mother. As he grew up, it became quickly apparent that he possessed a genius-level intellect, and worked his way through school quickly, graduating two years ahead of others his age.

He was recruited by S.H.I.E.L.D., given citizenship, and attended the organization's Academy of Science and Technology. It was there where he became friends with the equally-intelligent, bio-chem expert, Jemma Simmons. They soon became best friends, the attached-at-the-hip type, and eventually earned the nickname 'Fitzsimmons' from their peers.

Both Fitz and Simmons graduated from the academy three years early. Fitz would have been happy to spend all of his time in a lab. However, at the urging of Simmons (and against the advice of Professor Vaughn), the pair put in for a field position.

Character Details

Leopold Fitz is somewhat socially awkward, and he's virtually joined at the hip to his best friend, Jemma Simmons. In spite of his awkwardness, he occasionally surprises others with a clever wit and dry sense of humor. He also has a strange affinity for monkeys.

In spite of his lacking in the combat arena and field experience, he possesses a remarkable level of bravery. While he can be scatterbrained, he is also an extremely quick thinker. He believes deeply in the friendships he creates, and is loyal to the core. He also holds a deep rooted belief that all villains are redeemable, and that people are never "born evil". Thus, he tends to be quick to forgive and understanding of others' problems.

Fitz also tends to go through with his promises… and his threats. If given to violence, you may not need to worry about his fists, but you'd damn well better worry about what he creates.

In spite of what others might think, his relationship with Jemma Simmons has been and very well may always be completely platonic. He cares about her like a twin sister, and he would do anything for her, but romance has always simply been, well, not a factor.


Image Name Relation Information
comuxphil.jpg Agent Coulson Boss Senior Agent, very pleasant person. Much less intimidating than Agent May.
Image Name Relation Information
May2.jpg Agent May Boss My superior and… bloody hell, don't cross her, or piss her off, or break any rules around her!
Image Name Relation Information
tumblr_m96j7aPXKt1qm8fi6.jpg Darcy Lewis Co-worker A junior agent. No filter. Kinda cute, but a little weird. I think she's boy crazy.
Image Name Relation Information
Hawkeye.jpg Agent Barton Co-worker Special Agent, likes to use bows and arrows. Technologically loaded arrows. Developing special arrowheads for this guy is going to be an absolute joy.
Image Name Relation Information
simmons.jpg Simmons Joined at the hip Best friend, went to the academy with her. She's bloody brilliant, and a total pain in the arse.


Image Type Night-Night Gun (Rifle)
NightNightRifle.png Projectile Weapon The Night-Night Gun is a prototype tranquilizer rifle manufactured by Jemma Simmons and Leo Fitz. The rifle fires non-lethal bullets with heavy stopping power that break up under the subcutaneous tissue. From there, the bullets deliver a tiny amount of dendrotoxin, incapacitating the target long enough for them to be secured and with no harmful side effects. (Not Cleared for Field Use)
Image Type Golden Retriever drones (aka 'seekers')
GoldenRetrievers.jpg Automated Drone The "Golden Retrievers" are mobile independent tracking drones created by Leo Fitz and Jemma Simmons. These independent, airborne tracking devices disperse in different directions while searching for their programmed target. They scan for visual data, scent, heat signatures and biological signatures, and are also equipped with a debilitating "scream mode".
Image Type D.W.A.R.F. drones
DWARF.png Operator-controlled Drone The D.W.A.R.F.s (Drones Wirelessly Automated to Retrieve Forensics) are a set of quad-copter robotic drones custom designed by Leo Fitz and Jemma Simmons to seek out, analyze and scan forensic evidence at S.H.I.E.L.D. hot-spots. The drones are controlled from a specially designed tablet from which the operator can control the drones movements and organize, classify and prioritize the incoming data.
Image Type Mouse Hole
Mouse_Hole.png Cutting Tool The Mouse Hole is a portable cutting device capable of cutting through almost any material. It was created by Leo Fitz, but never went to production for field agents. (Not Cleared for Field Use)
Image Type Full-Spectrum Goggles
Fullspec.png Tactical Eyewear The Full-Spectrum Goggles are a pair of goggles developed by Leo Fitz. They are used to visualize the whole electromagnetic spectrum from infrared to near-ultraviolet.

Specially Designed Archery Munitions

Name Description
G-Pegger An arrowhead that bears a micro-GPS tag. (Currently in design stage)
Retriever Tag An arrowhead that bears a tag designed to sync up with the Golden Retrievers (aka 'seekers'). (Currently in design stage)
Nerve Jacker Designed to temporarily stun the nervous system. (Currently in design stage)
Dendro-Tip Designed to deliver a debilitating dose of dendrotoxin. (Currently in design stage)

Character Gallery


Shit Rolls Downhill
January 29, 2015: Fitz seeks out Deputy Director Hill, and Hawkeye asks the engineer for some help.
(log: 20150129-shit-rolls-downhill | tags: fitz hawkeye maria_hill shield | posted: 31 Jan 2015 20:55)

Off The Books Magic
January 28, 2015: Fitz seeks out "off the books" magical assistance from Jericho… and subsequently Zee
(log: 20150128-offthebooksmagic | tags: aspect fitz nyc zatanna | posted: 29 Jan 2015 07:10)

January 26, 2015: Work continues on Operation: Wand, with some help from Stark Industries. (Warning: technobabble-gasm)
(log: 20150126-t-d-b-r-a | tags: aethera emmett_argyle fitz shield | posted: 27 Jan 2015 16:46)

Security Breach: Step Into My Office
January 25th, 2015: Fury returns from Peurto Rico just in time to clean house, Melinda May, Steve Rogers, Bobbi Morse, Lance Hunter and Leopold Fitz all enjoy the man's sunny mood.
(log: 20150125-security-breach:step-into-my-office | tags: captain_america fitz hunter mockingbird nick_fury nyc shield the_cavalry | posted: 25 Jan 2015 22:01)

Security Breach: The Prototype
January 25, 2015: Tasked with the important Operation: Wand, Fitz calls in a few favors.
(log: 20150125-security-breach:prototype | tags: beast emmett_argyle fitz hydra pepper_potts shield | posted: 26 Jan 2015 16:57)

Security Breach: Outside Consultation
January 25 2015 Jericho arranges a meet for May, Sara and Hellboy. Chinese Hell-Kings optional
(log: 20150125-security-breach:outside-consultation | tags: aspect fitz hellboy shield the_cavalry witchblade | posted: 27 Jan 2015 04:56)

Elijah's Mantle, Part 4
January 23, 2015: Alpha and Bravo Team get together to discuss what they believe HYDRA will be up to.
(log: 20150123-elijah-s-mantle-part-4 | tags: beast black_panther black_widow captain_america darce elijahs_mantle emmett_argyle fitz midnighter witchblade | posted: 24 Jan 2015 04:05)

Elijah's Mantle, Part 3
January 23, 2015: Beast asks Cap for some help and the gang debates Jesus.
(log: 20150123-elijah-s-mantle-part-3 | tags: beast captain_america elijahs_mantle fitz midnighter witchblade | posted: 24 Jan 2015 01:49)

Elijah's Mantle, Part 2
January 22, 2015: The drama continues inside St. Mark's Cathedral in Alexandria, Egypt
(log: 20150123-elijah-s-mantle-part-2 | tags: beast captain_america elijahs_mantle fitz midnighter witchblade | posted: 23 Jan 2015 03:32)

Elijah's Mantle, Part 1
Elijah's Mantle: Captain America puts together a strike team to investigate a brutal massacre at a church in Alexandria, Egypt.
(log: 20150121-elijah-s-mantle-part-1 | tags: beast captain_america fitz midnighter witchblade | posted: 21 Jan 2015 04:26)

A Shot in the Dark
January 18 2015: A SHIELD team responds to an attack in progress at a satellite office in New York
(log: 20150118-a-shot-in-the-dark | tags: aspect captain_america fitz us_agent witchblade | posted: 20 Jan 2015 11:09)

The Last Days of Wonder, Part 3
January 16, 2015: Members from various groups interrogate Ulysses Hayes.
(log: 20150116-the-last-days-of-wonder-part-3 | tags: captain_america darce fitz maria_hill shield u-s-agent witchblade | posted: 16 Jan 2015 04:26)

page 2 of 2« previous12

Back to: Current Cast

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License