Charm, 4'11" and under 100 pounds, was often cast as the waif (which particularly appealed to those who enjoyed watching sex scenes with starlets portraying "underage" girls being seduced by men), although she could also play the aggressor. But Nikki Charm became (in)famous for her flexibility during sex scenes. She could contort her frame into unusual sexual positions. Charm was a "spinner," a very tiny woman who could mount a man and literally be spun around. She was also one of the first women to squirt on camera. Although several of her squirts were deleted from the films, a few were included. After filming a scene for her debut adult film, "Young and Naughty," a producer reportedly said, "Look out, Ginger!" (in reference to porn legend Ginger Lynn, who was near the height of her popularity at the time). Along with Lynn, Charm is a member of the Adult Video News Hall of Fame.

In light of Traci Lords' revelation that she was underage during the majority of her adult film career (Lords made only one "legal" film), Charm was also suspected of being underage. Federal subpoenas were issued seeking access to records confirming her age. However, she was able to produce documentation verifying that she had made her first adult film soon after her 18th birthday and was therefore legally able to appear in pornographic movies.

In October, 2002, Eaves was arrested and charged with several counts of burglary and grand theft auto. Convicted and sentenced to a five-year prison sentence (served in the Central California Women's Facility near Chowchilla) she was released on parole in December, 2005.