Xander Berkeley, "Percy"; Melinda Clarke, "Amanda"; and Aaron Stanford, "Birkhoff" talk about their characters and the shadowy agency known as Division. Thursdays 9/8c! Nikita Video: Watch Nikita full episodes, previews, clips, interviews and more video. Nikita is a spy and assassin for a top secret U.S. government agency, who rebels against the system that created her and will stop at nothing to bring their powerful operation to an end.