Piper Halliwell is a fictional character from the American television series Charmed, played by Holly Marie Combs from October 7, 1998, until May 21, 2006. The character was created by Constance M. Burge, who based Piper on her second-oldest sister. Piper is introduced into the series as the middle sister to Prue and Phoebe Halliwell. She is one of the original featured leads and, more specifically, a Charmed One – one of the most powerful witches of all time. Piper's power was initially described as the ability to stop time in her surrounding environment. As the series progresses, Leo reveals that her power actually works by slowing down molecules to the point that they stop. She also receives the power to cause evil beings or objects to explode using her hands, by instead speeding up molecules to the point of combustion.