The main character of the "Zero Woman" series is Special Undercover Agent Rei (her family name's never been revealed), who works for "Section Zero" of the Tokyo Police Department. Her risky assignments require her to infiltrate the criminal underworld where, even though she often finds herself in "compromising" positions, she always manages to come out on top.
The role of Rei has been played by a total of 10 different actresses over the years, the first of whom being 70s pink film queen Miki Sugimoto (above). See the others after the jump.