Ana Lucia Cortez is a fictional character on the ABC television series Lost, played by Michelle Rodriguez. Ana Lucia made her first appearance as a guest star in the first season finale, and became part of the main cast for season two. After Oceanic Flight 815 splits in mid-air, the tail section and fuselage crash on opposite sides of a mysterious island. Ana Lucia becomes the leader of the tail section. Flashbacks in her two centric episodes, "Collision" and "Two for the Road", show her life as a police officer before the crash.