The Netherworld is a place that appeared in the episode Love in a Nethervator. It is an underground world that is a dark, flaming cavern where Otis the button keeper thrives. According to Kin's hazy Rock Lore, in this world, Otis plays elevator music on his organ and sends it up into all of the elevators on the surface of the earth. The truth is, however, is that Otis' hatred for elevator music has caused him to dwell there so he can trap it for all eternity.
- The Netherworld is quite likely based off Hell.