13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
High Order MageUnknown
TranslocationUnknown
Altar of the Wind SpiritUnknown
Dummy Quest Kill CreditUnknown
Thalanaar HippogryphUnknown
[DNT] Kill Credit: Bones thrown into the Sime PitUnknown
Old RusthowlUnknown
Seaforium Blasting PowderUnknown
Bloodhound RuntUnknown
Burning BunnyUnknown
StalkerUnknown
Rare Proxy StalkerUnknown
[DNT] Quest Kill Credit - Cured Tainted Hyjal GrovewalkerUnknown
Alliance Rank PvP VendorUnknownWeapons
Horde Rank PvP VendorUnknownWeapons
Alliance Rank PvP VendorUnknownArmor
Horde Rank PvP VendorUnknownArmor
OlvekUnknown
StalkerUnknown
Awakened Fel Ash SlimeUnknown
Awakened Fel Ash SlimeUnknown
[DNT] Kill Credit: Work Stations Disrupted [Slime]Unknown
Equipment EnchantsUnknown
[DNT] Kill CreditUnknown
[DNT] Kill Credit:Unknown
[DNT] Kill Credit:Unknown
[DNT] Kill Credit:Unknown
Commander HaalienUnknown
WispUnknown
[DNT] Kill Credit: Armor slot selected for studyUnknown
KC CreatureUnknown
[DNT] Kill CreditUnknown
Ghostly AttendantUnknown
Murkborn ElementalUnknown
[DNT] Kill Credit:Unknown
[DNT] Kill Credit:Unknown
Barkskin AncestorUnknown
StalkerUnknown
StatueUnknown
TentUnknown

Classic reference data from QuestieDB (Forever data, commit c5de61a), with positions on Forever's zone maps. It doesn't confirm that an NPC, location, quest or item is in Forever.