Horror

Horror could refer to any of the following:

Monsters

 * Cave horror, a monster found in caves underneath Mos Le'Harmless
 * Jungle horror, a monster found on the island of Mos Le'Harmless itself

Other

 * Horror from the Deep, a quest featuring dagannoths
 * Little Cave of Horrors, a music track unlocked in the caves found under Mos Le'Harmless