Ghost

A Ghost is a player's visual representation upon Death when playing in Hardcore mode. Any items held on death will be dropped, and all Life Crystals used would be reset to the default. When in Ghost form, the player can not edit the world, be harmed, or start events. They can only speak, when in Multiplayer. If they should log out, the character that became a ghost would no longer be listed in the character selection page. A ghost can make it easier to find items since they can go through objects.

Trivia
It is possible to reach areas you would not be able to earlier (either because it was unavailable due to the world's design or impossible to access due to your player's equipment), such as the Dungeon, the Underworld or the Underground Jungle while you are a ghost, although it may take a long time to get there. And seeing as the ghost creates no light, you cannot see in places that you have not lit up before.