The Netherworld (also known as Nether-Region, Underworld, Ghostworld, Spirit World, Netherdimension, Nether Real, and the Other Side) is a dimension inhabited by ghosts and demons. It isn't just one world alone, it is capable of infinite configurations.
Ghostbusters: The Video GameEdit
After Egon Spengler, Ray Stantz, and the Rookie trap Eleanor Twitty, a cross-dimensional portal appeared from the fifth to the fourth. Ray admitted it was something he's dreamed about since college and mentioned it is all described in the "Monarchia Daemonum."  The trio is then taken to the Ghostworld, a Gozerian dimension to be specific. They are unable to leave because of Azetlor's hold on them. However, after they defeat him, the exit portal appears and they emerge back in the Reading Room of the New York City Public Library.
Secondary Canon HistoryEdit
Ghostbusters: Sanctum of SlimeEdit
- On page 14 of Ghostbusters Volume 2 Issue #4, the portrait of Dumazu's dimension is between Winston Zeddemore and Special Agent Melanie Ortiz.
- On page 4 of Ghostbusters: Funko Universe, Master Takeda mentions the Netherworld.
- On page 14 of Funko Universe, Master Tomo mentions the Netherworld.
Secondary Canon AppearancesEdit