She is a vengeful spirit of a dead animator who previously worked on a Sonic the Hedgehog cartoon alongside her fiancé, Thomas. Following his murder, Lilith would spiral into depression before eventually passing away for an unknown reason.

However, Lilith's soul was filled with anger and hate, and she returned as a ghost possessing the old cartoon she previously worked on, dedicating her new undead life towards killing the people who wronged her, including that of her fiancé's murderer, Thomas,