Ferro is a descendant of the demons, and possesses several traits of their bloodline. Her physical capabilities (strength, speed, precision, senses) exceed normal human limits. Her vision is especially acute; she can see in near-total darkness and her distance perception is as good as a man with a spyglass. However, she is completely color-blind. Her demonic heritage also allows Ferro to handle the Seed without harming her physically, and apparently allowed her to sense its presence and locate it within the House of the Maker.
Ferro's exposure to the Seed during Bayaz's battle with Tolomei at the House of the Maker allowed her body to heal her broken hand and a broken arm in minutes. After confronting the Hundred Words with Bayaz at the Battle of Adua , her prolonged exposure to the Seed apparently caused her to hear voices that may be the voices of the Tellers of Secrets . As a result, she may be losing her sanity. Also by the same token however, her strength, speed, and sight increase by epic proportions. Also, she gains the power to manipulate temperature to chilling degrees, so much that she can turn water under her feet into ice and walk onto it. Ferro also gains the ability to fall from miles high but land softly, and turn her skin to a bright white light. Her strength after the seed's effects are shown in an engagement with an eater, during wich the eater tries to assainate Ferro. Ferro, however, was able to break off the eaters hand, and then crush it between her palms.