Sleepless Voidseeker are a faction of void elves that serve nozth
Quotes
All... the dragonflights... will follow...
Come to the darkness.
I seek... the endless dark...
The son will follow the path of the father!
There is... no way... but N'Zoth...
You cannot outlast his will!
You will know the glory of N'Zoth!
Your fate... is already known...
https://wow.gamepedia.com/Sleepless_Voidseeker
the void elves on the island expeditions seem crazy and they serve the void