Hollow

Appearance and Location
Hollows appear in every biome. The universal appearance among them is a hollow hemisphere in their head, with a solitary yellow light.

Known Hollows
Bloodmane Naru Hollow

Midlight Wolf Hollow

Mud Elemental Hollow

Associated Title
Progress towards the "Hollow Hunter" title is only made if you have the title for the creature that the Hollow is.

Example: If you are fighting a Naru Hollow, and you do not yet have a Naru Hunter title, the progress you get towards a title will not count towards the Hollow Hunter title, but the Naru Hunter title. For this reason, and the fact that the pre requisite hunter titles grant additional damage towards appropriately themed creatures, it is heavily advised that you obtain the appropriate title before hunting Hollows.

Killing 50 Hollows will grant a character the "Hollow Hunter" title, which increases damage done to Hollow-based creatures by 50%. Being the first to kill a Hollow will also grant you the "Hollow Hunter" Title.