13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Halloween Pirate Female1
Halloween Male Ghost1
Halloween Female Ghost1
Anachronos the Ancient63
Fandral Staghelm63
Hero of the Horde1
Anachronos Dragon Form1
Arygos Dragon Form1
Caelestrasz Dragon Form1
Merithra Dragon Form1
Qiraji Wasp60
Qiraji Drone60
Qiraji Tank60
Kaldorei Infantry58–60
Anubisath Conqueror61
Debug Point1
Merithra's Wake1
Sand Vortex60
Disgusting Oozeling1
Ironforge Brigade Mortarman60
Mortar Sergeant Stouthammer1
Grace of Air Totem III60
Strength of Earth Totem V60
Minion of Omen59–60
Kaldorei Elite58
Scorpion1
Eranikus, Tyrant of the Dream63
Nighthaven Defender60–61
Stewvul60
Buru the Gorger Transform Visual1
Auctioneer Grum1
Auctioneer Bertram1
Hive'Zara Hatchling60
Temporary Reindeer1
Mana Fiend60
Twilight Master Xarvos56Twilight's Hammer
Noxxie Razzlebrack56–57
Anubisath Warrior61
Anubisath Swarmguard61
Hive'Zara Swarmer60

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.