Daniela, along with her sisters, were mutant humans born from masses of an unknown species of mutant insects resembling blowfies. These flies are born through the Cadou laying its eggs on a host, though the insect themselves cannot reproduce. After being exposed to the host's flesh, the flies will consume it over the course of days and cover the body in the swarm. During this time, the flies begin to mimic the human form, capable of changing their colors create the desired look, similarly to a chameleon's chromatophore. In this way, the flies are capable of swarming or morphing themselves to form the likeness of a human, similarly to the Mimicry Marcus.

Being made out of the insects, Daniela is able to dissipate into the swarm at will in order to move around the castle at very high speeds. She is unable to be hurt in this state as the multitude of insects either absorb or deflect any attacks put towards her. However, the insects that make up Daniela's body are notably weak against sudden drops in temperature, especially below 10 °C (50 °F). Exposure to such cold causes a drastic decrease in metabolism, eventually resulting in a dormant, cryptobiotic state which leaves them vulnerable to attacks from conventional weapons.