Gertrude Aldridge

Gertrude Aldridge was the first ghost seen by Erin, Abby and Holtzmann in the 2016 film. She was the horribly disturbed daughter of a wealthy New York aristocrat who was responsible for the murder of the family's servants. As a result, she spent the rest of her life locked away in her family manor's basement, being occasionally fed food through a small slot in the door. In the present day, she haunts the Aldridge Mansion Museum when Tour Guide Garrett (Zach Woods) was about to leave. As soon as Garrett heard her banging on the basement door, he attempted to run out, but the doorknob was red hot. He attempts to throw a chair to the window, but the chair floats and hit him instead, sending him falling down the basement stairs. He notices some green slime on the basement floor, then noticed he got some on his hands. He runs up the stairs to the door, but they collapsed, leaving him clinging on for dear life. Gertrude later reveals herself from the slime on the floor, with Garrett screaming in terror. While Abby and the group were inspecting the mansion, her ghost appears from the basement door, moving towards the group. When Erin tries to communicate with her, Gertrude projectiles ectoplasmic vomit on Erin, then escapes out of a wall and into the streets.

During Rowan's invasion of New York City, the team, calling themselves "Ghostbusters" encounter her again, alongside the Electrocuted Ghost found in the subway and Mayhem. They defeat all three.