Dark Core is a title unlocked for completing the Corporeal Beast boss collection log. This requires players to get every unique drop from Corporeal Beast. This title is unlocked from completing the Out of Body experience feat.
This title changes according to the language of the server on which RuneScape is played, as shown below:
|| Dunkler Kern [Name]
|| [Name] au cœur noir
|| [Name] do Núcleo Negro
- As of 25 January 2018, 45 people had unlocked this title.