|For other uses, see Mark Smith (disambiguation)|
Mark Smith worked constantly in field assignments for three years, hoping to be assigned to work in the Helicarrier. He took a day off from assignments when Maria Hill chose to give him a random psychological assessment. Smith was deemed "unfit for assignment" and transferred to S.H.I.E.L.D. S.T.A.T.I.O.N. 
Smith became a research and development technician in S.H.I.E.L.D. S.T.A.T.I.O.N. working with Nicholas Cooper on how the Tesseract reacted with the Scepter based on videos they had from the Battle of New York. Cooper was enthusiastic about the project; Smith could not decipher the patterns and readings that Cooper noticed. When Cooper asked Smith why he was doing R&D instead of field assignments, Smith told him the story of Maria Hill's assessment and how he felt disdain for the S.H.I.E.L.D. commander.
The conversation that Smith had with Nicholas Cooper was overheard by a guard loyal to HYDRA. In his gym bag, Smith found a note telling him to come to a hangar. There the guard introduced him to Wolfgang von Strucker who wanted Smith to join his unit, but first, Smith had to prove his loyalty. Smith killed Cooper.
- S.H.I.E.L.D. (First Incarnation) - Former Employers
- Mark Smith's name and likeness are a reference to Mark Smith, VP Routing and Tours of Victory Hill Exhibitions, responsible for the Marvel's Avengers S.T.A.T.I.O.N. Exhibition at Discovery Times Square in New York City.