Melissa Rosenberg holds a prominent position within the Witch Coven and serves as the trusted secretary to Douglas Rosenberg, director of Project Leviathan. While she maintains a facade of loyalty to him, she secretly orchestrates a clandestine agenda to dismantle his power, driven by a desire to sabotage his relentless pursuit of Ellis, the project’s pivotal subject. Her ultimate objectives remain shrouded in secrecy.

She forms a tenuous alliance with L.A., a fellow subordinate, though their motivations clash—L.A. obsesses over capturing Ellis, while Melissa prioritizes destabilizing Rosenberg’s command. Her influence wanes after Project Leviathan’s collapse, as the Witch Coven abandons its pursuit of Ellis upon discovering Rosenberg’s manipulation of their operations.