Daniela Dimitrescu was a chimæric mutant human born from the Cadou research project, and an adopted daughter of Countess Alcina Dimitrescu. She resided at Castle Dimitrescu with the rest of her family, including fellow adopted siblings Bela and Cassandra. Daniela was the youngest daughter and she was noted to be the most delusional of the three. Like her other sisters, Daniela's DNA consisted of human and blowfly genes, and she was capable of expressing these genes where needed, changing between a human form and a swarm of flies. This ability to change form allowed her to resist gunshot wounds and other physical attacks, as well as giving her the ability to stalk prey. The imitation DNA however made them susceptible to low temperatures which would force them to undergo cryobiosis, with temperatures under 10 °C (50 °F) halting metabolism. This was a known risk to their health as it left them vulnerable to attacks, and the sisters rarely if ever left the castle.