Highmore is an Iberian islander and former victim of the Inquisition, marked by tragedy when her parents were falsely accused and taken from her. Rescued by Cicero, a Bishop of the Deep, she became fascinated with the Seaborn’s equality and voluntarily joined their collective, nearly losing herself to their hivemind. Saved by Mizuki, she was brought to Rhodes Island, where she now serves as a field operator. Despite her Seaborn traits and a turbulent past, Highmore works to adapt to human life, balancing her dual nature as both human and Seaborn.