Jasper Sitwell was a senior agent with the Strategic Homeland Intervention Enforcement and Logistics Division.
Prior to Agents, it was he who, in The Consultant, gave Coulson the idea of sending an irritating envoy to General Ross, in order to ensure that The Abomination would not be 'loaned' by the Army for the Avengers Initiative. He also retrieved vital Chitauri technology, in the form of Item 47.
Sitwell may have been harboring something of a personal grudge against Jemma Simmons for tasering him in "The Hub". On his second appearance in the series, he warns Coulson that he won't find Director Fury until the latter wants to be found.
In Captain America: The Winter Soldier, it was revealed Agent Sitwell was a HYDRA Agent. In "Turn, Turn, Turn" this fact was brought up when HYDRA Agents were enticed out of the shadows, when another S.H.I.E.L.D. traitor triggered them to reveal themselves simply by stating he knew Sitwell had "filled their ranks".
In "The Winter Soldier", Sitwell is thrown out of a car onto a highway at high speed, indicating an almost certain death.
- Marvel Cinematic Universe:
- Agents of S.H.I.E.L.D.:
- There are unsubstantiated rumors of a "One-Shot" to show Sitwell as a triple agent and loyal subordinate of Fury.