Sharon Carter is the great-niece of S.H.I.E.L.D. co-founder Peggy Carter, and became a member of the agency herself. Sharon would be assigned by Nick Fury to monitor Steve Rogers in the apartment he lived in, going by the alias Kate. When the infiltration of HYDRA within S.H.I.E.L.D. was revealed, Sharon participated in the resulting shootout. After S.H.I.E.L.D fell, Sharon would join the CIA, where she would be involved in the investigation of the bombing of the Vienna International Centre while secretly helping Steve Rogers and Sam Wilson protect Bucky Barnes, who had been framed for the bombing.
Powers and Stats
Tier: Likely 9-C
Name: Sharon Carter, Agent 13, "Kate"
Origin: Marvel Cinematic Universe
Age: Around 30
Lifting Strength: Above Average
Striking Strength: Street Class
Durability: Likely Street level (Survived getting smashed through a table by the Winter Soldier, but was knocked out)
Range: Melee range, higher with weapons
Standard Equipment: FNX-45 Tactical handgun
Intelligence: Is a skilled spy, marksman and martial artist
Weaknesses: None notable