What power does Harley Quinn have?
All the members of the pact in the Enemy Within are superhuman to a degree. Riddler's blood gives him superhuman strength and agility at 60.
Bane has super strength as well as an immunity to bullet due to whatever venom does to his skin and Mr. Freeze has his ice powers.
What power does Harley has? Does she have advanced reflexes and strength given she never wears body armour of any kind and can effortless wield a sledgehammer as a weapon including using it to murder multiple people by herself at the bank heist?