Idoia López Riaño
Idoia López Ruaño is an ETA hitwoman nicknamed "La Tigresa" for her "sexual prowess". She was jailed in the 1990s for a string of murders for the Basque terror group.
Various newspapers have reported that author Luke Jennings had revealed the character of Villanelle was based upon Ruaño. Jennings had said that Ruaño, who had killed 23 people, "was clearly a psychopath, completely without empathy".
Ruaño eventually expressed remorse for her crimes, and was released after 23 years.
