Emily Zhang was a Canadian soldier who helped the American troops in a war in Afghanistan, losing her life in the process. Being a great and brave soldier, the Roman god of war, Mars admired her bravery and courage. After awhile, she gave birth a son of Mars: Frank Zhang.
- Shapeshifting - also being a descendant of Periclymenus, she had this ability but never told anyone.
Emily Zhang was briefly mentioned in a flashback of Frank watching his mother receiving her medal of valor for a noble death on the battle field. She was killed saving her friends from what is said to be a grenade. While not playing a major part, throughout the book she is constantly being mentioned in some way or another.