Sharon Carter

"Move away from your station!" "Like he said, Captain's orders." "You picked the wrong side agent." "Depends on where you're standing."

- Brock Rumlow and Sharon Carter

Sharon Carter is a former agent of S.H.I.E.L.D. undercover as the neighbour of Steve Rogers. After the S.H.I.E.L.D. Civil War she joined the CIA.

Nurse Facade
"What about the nurse that lives across the hall from you? She seems kinda nice." "Secure the engine room, then get me a date."

- Black Widow and Captain America

Sharon Carter was assigned to protect and monitor Steve Rogers in his home apartment and was given the apartment opposite to his, acting as a nurse. Over her tenure as his protector, she became acquainted with him, and would talk to him whenever they met. When Nick Fury was attacked by the Winter Soldier in Rogers' apartment she burst in to aid Rogers, informing him that she was a member of the S.H.I.E.L.D. special service. She stayed with Fury providing medical attention while Rogers attempted to apprehend the attacker.

After Fury was declared dead after surgery failed to save him, Carter met with Secretary Alexander Pierce who questioned her about the incident and comforted her saying that she had done everything she could. As she exited she passed Rogers, who nodded to her sarcastically saying, "neighbor".

Project Insight
When Jasper Sitwell ordered all S.H.I.E.L.D. agents to join the manhunt for Captain America after he escaped the Triskelion, Carter questioned his orders.

Carter was working in the central control room for Project Insight when Captain America revealed the infiltration of HYDRA. Brock Rumlow and STRIKE walked the control room where he threatened to kill the agent in charge unless he began the launch sequence immediately. The Launch Technician refused, saying that he would not put the Helicarriers in the air. Rumlow ordered him to step away from his station but Carter then intervened. She pointed her gun at him telling him to stand down, as she did this, the other loyal S.H.I.E.L.D. agents in the room pointed their guns at STRIKE and gunfight broke out. Rumlow despite Carter's best efforts, managed to put the Helicarriers in the air.

S.H.I.E.L.D. Civil War
After S.H.I.E.L.D. was disbanded, Carter was recruited by the CIA.

Relationships

 * S.H.I.E.L.D. (First Incarnation) - Former Employer
 * Nick Fury - Former Director
 * Maria Hill - Former Deputy Director
 * Steve Rogers/Captain America - Neighbor and Colleague
 * HYDRA - Enemies
 * Brock Rumlow - S.H.I.E.L.D. Colleague turned Enemy
 * CIA - Employer

Trivia

 * In the comics, Sharon was originally written as Peggy Carter's younger sister, but was later retconned as her great-niece. In Captain America: The Winter Soldier, Sharon's last name and relation to Peggy weren't established.