Harriet was presumably human, but had a claw located on her right armt that was powered by kryptonite. She was the appointed leader of the Female Furies. She was trained by Granny Goodness in combat. Harriet herself, does not have super strenth, her claws are the source of her strength, dexterity and invulnerability. Kryptonite also seems to make the claws sharper. They can become so sharp that they glow Green K radiation.
Harriet was able to subdue Clark Kent when he was weakened by kryptonite. She and the other Furies subdued Clark. However, once the kryptonite was no longer a threat to Clark neither were the Furies. She was later defeated in hand to hand combat by Tess Mercer at the end of the episode. She was thrown through a glass panel and knocked unconscious.
- Lindsay Hartley later appeared as psychotic femme fatale Chloe Spade in the 2016 Lifetime film Nightmare Nurse, the evil Ruby Asher in 2017's Deadly Attraction, and callous and crazed villainess Amber Sheridan in the 2018 Lifetime film Killer Twin.