Mockingbird

Mockingbird is a special S.H.I.E.L.D. black-ops agent.

Appearance
She has long blond hair and blue eyes with an exceptionally pretty face. She is of average height and athletic build. Her costume is blue, with billowing sleeves, features a stylized black/blue mask, and no pants which shows off her legs quite nicely.

Personality
She is a headstrong and affectionate fighter. She used her beauty charms on Hawkeye to convince her to join them to hunt Black Widow, and later used it to charm HYDRA agents to free her but got interrupted by Grim Reaper. She seems to be a nice lady as Captain America described.

The Avengers: Earth's Mightiest Heroes
Mockingbird accompanies Hawkeye, and Black Widow during their mission to capture the Hulk, acting as the pilot for their prison transport. After the helicraft is damaged by falling debris, the Hulk saves Barbara's life by catching the transport before it can crash into the ground. This action ultimately leads Hawkeye to believe that the Hulk isn't the monster that he appears to be.

After Hawkeye left S.H.I.E.L.D. and joined the Avengers, Mockingbird replaced him in the black ops team.

Later, she partners with Hawkeye on his mission to track down HYDRA and capture Black Widow. She was sent to keep an eye on the team by S.H.I.E.L.D. higher-ups. Believing it to be the best way to infiltrate HYDRA, the two heroes allow themelves to be captured and are brought bound and gagged before Black Widow and her cohorts, including Madame Viper and Baron Strucker. After freeing herself and helping Hawkeye defeat and capture the villains, Mockingbird boards the S.H.I.E.L.D. Helicarrier, where she examines Viper with Nick Fury, discovering that she's actually a Skrull posing as Viper.

At some point after this she was replaced by Veranke.

Agents of S.H.I.E.L.D.
Mockingbird appeared in the Second season fifth episode, "A Hen in the Wolf House," in the ABC television series Agents of S.H.I.E.L.D..

She is potrayed by Adrianne Palicki.

Equipment

 * Staff: Mockingbird's melee weapon, able to extends its length and is able to damage or hurt foes within range in combat.
 * Wing Projectel's: Mockingbird's wing projectel's on her arms assist her to fly like a real bird.