She possesses superhuman speed, stamina, agility, and reflexes. Jessica's body is more resistant to injury than an ordinary person, allowing her to take far more physical punishment compared to an ordinary human. Jessica's palms and soles secrete a special fluid that allows her to cling to solid objects, like a true spider. Jessica's physical makeup also makes her highly resistant to all terrestrial poisons, toxins, and completely immune to radiation. While she is typically rendered dizzy by the initial dose, she is completely immune to it after being exposed again. She also exudes a high concentration of pheromones that elicit pleasure and attraction in men and revulsion in women, although she typically uses a chemical "perfume" that renders these pheromones inert. Jessica's body also produces an inordinate amount of bio-energy, which she can discharge from her hands.