In Borderlands: The Pre-Sequel, Elpis is the moon associated with the planet Pandora.
The game is set primarily on Elpis, Pandora’s moon, and follows characters connected with the rise of Handsome Jack. Its setting expands the Borderlands universe beyond the surface of Pandora, using low gravity and lunar landscapes as important gameplay and story features.
Elpis is not the name of Pandora itself. Pandora is a planet in the game series, while Elpis is its moon. The distinction can be easy to miss because both locations belong to the same fictional setting and the game’s title and characters remain closely tied to Pandora’s wider history.
The name Elpis also echoes Greek mythology. Elpis is the personification of hope, the one thing traditionally said to remain in Pandora’s container after the evils escaped. That mythological association gives the moon’s name an additional connection to the broader Pandora theme, even though the game is a science-fiction action title.