This miniature figure is a DEO Agent from the DC HeroClix Unleashed set. The figure depicts a female character in a white shirt and brown trench coat holding a gun. 
Product Details: Game System: HeroClix Set Name: Unleashed Character: DEO Agent Rarity/Number: Rookie Figure #001 (other variations #002, #003, and LE #201 also exist) Publisher: WizKids