13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Blackwing Technician60Blackwing Lair
Chromaggus63Blackwing Lair
Corrupted Red Whelp60Blackwing Lair
Corrupted Green Whelp60Blackwing Lair
Corrupted Blue Whelp60Blackwing Lair
Corrupted Bronze Whelp60Blackwing Lair
Trigger Guse1Alterac Valley
Trigger Mulverick1Alterac Valley
Trigger Jeztor1Alterac Valley
Trigger Ichman1Alterac Valley
Trigger Slidore1Alterac Valley
Trigger Vipore1Alterac Valley
Haggle20Deeprun Tram
Deeprun Diver20Deeprun Tram
Massive Geyser60
Steeljaw Snapper42–43Tanaris
Bounty Hunter Kolark60Orgrimmar
Artilleryman Sheldonore60Ironforge
Najak Hexxen59Bounty HunterAlterac Valley
Ravak Grimtotem60Bounty HunterAlterac Valley
Athramanis60Bounty HunterAlterac Valley
Dirk Swindle59Bounty HunterAlterac Valley
Gravis Slipknot36Alterac Mountains
Araga35Alterac Mountains
Cranky Benj32Alterac Mountains
7:XT41Long Distance Recovery UnitBadlands
Prince Kellen33Desolace
Kaskk40Desolace
Hissperak37Desolace
Giggler34Desolace
Accursed Slitherblade35Desolace
Burgle Eye38Dustwallow Marsh
Drogoth the Roamer37Dustwallow Marsh
Dart38Dustwallow Marsh
Ripscale39Dustwallow Marsh
Hayoc41Dustwallow Marsh
The Rot43
Lord Angler44Dustwallow Marsh
Oozeworm42Dustwallow Marsh
SulhasaUnknown

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.