Dottie Underwood: Agent Carter's Deadliest Rival

Dottie Underwood is one of the most memorable antagonists in Agent Carter. Played by Bridget Regan, she appears friendly and ordinary at first, which makes her far more unsettling when her true skills come out.

A neighbor with a secret

Dottie first appears as a cheerful, sweet young woman living in the same residence as Peggy. That friendly surface is part of the cover. Underneath, she is a highly trained operative with fighting skills, patience, and a knack for charm that makes people trust her.

The Black Widow connection

In the MCU, Dottie is linked to the Soviet program that trained young women as elite spies and assassins, the same world that later produces Natasha Romanoff. The connection gives Dottie extra weight for viewers who know the films, and it hints at the long shadow the postwar era casts over the franchise.

The Peggy rivalry

Dottie and Peggy are well matched. They are both skilled, both quick-thinking, and both dedicated to their sides. Their fights are dynamic, but the best moments come from conversations where each woman recognizes the other's strengths. The rivalry feels personal rather than generic.

What makes her stand out

• Contrast. Her bubbly personality clashes with her ruthless actions in a way that keeps viewers on edge.
• Skill. Her fight scenes are quick, creative, and distinct from Peggy's style.
• Staying power. She remains a threat that Peggy cannot easily dismiss, and she returns in the series after her first major arc.

Where she fits

Dottie belongs to the Season 1 story involving Leviathan, and she plays a role again later in the series. For the season-level view, see our Season 1 review. For other characters, browse the character guide.

Why fans remember her

Bridget Regan gives Dottie an energy that is playful, strange, and a little frightening. She proves that a villain can be both fun to watch and genuinely dangerous, and she remains a favorite among fans who rewatch the series.