A genetic copy of Jules created by the fallen Caster Solomon, in order to manipulate the former's natural Gate Magic ability under the guise of helping her resurrect her parents and save the town of Gloomreach.
When the experiments failed, and her parents returned to the world as something otherworldly, Julia was the one to destroy them once and for all. Knowing what the grief would do to her sister, she killed Jules, resurrecting her using the devastating Death and Rebirth spell to remove the painful memories at the cost of much of her own life.
While Jules and Julia are two halves of the same being, only Julia retained their latent Gate Magic abilities. Always accompanied by her Gate Centipede, Charlie, she is a force to be reckoned with.
She has joined Morgana's cause as an attempt to repent for the pain she has caused her sister.