Diana Walter is a malevolent entity and the main antagonist of the 2016 movie film Lights Out. Originally a human in life, she became a vengeful spirit after an experiment went awry. She can only appear when lights are turned off.
Rise of the Villains[]
She serves the Galactic Empire and could be one of the scariest villains serving the Galactic Empire ( besides Darth Vader) due to her power to attack when lights are out.