Julia Orlostro

 was the name used a 20th century assassin. Originally the Contessa di Straglione, she was disowned by her family and turned to adventuring and murder-for-hire.

Zodaal, using Hepworth Stackhouse's body, had her kidnap Heath Porteous. This was part of Zodaal's plan to destroy the Earth and bond with a body. When Zodaal's original host choice did not work out, it decided to use Julia's body. She asked the Fourth Doctor to give her a gun to kill herself so that would not happen. After the space capsule she was in launched, she shot herself and Zodaal was trapped with the corpse. (PROSE: The English Way of Death)