13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Risen Shadowmage41
Risen Sorcerer41
Decrepit Ghoul40–41
Plagued Slime44
Plagued Maggot55
Vaelastrasz60
Flametongue Totem IV46
Crypt Scarab1
Kirtonos the Herald (Spell Visual)60
Young Arikara20
Smolderweb Hatchling1
Hallucination1
TEST NPC - DBUCKLER50
Guardian Felhunter30
Corrupted Cat1
Bile Slime58–60
Shahram1
Herald of Thrall50
Unkillable Test Dummy 60 Mage60
Orb of Deception (Orc, Male)1
Orb of Deception (Orc, Female)1
Orb of Deception (Tauren, Male)1
Orb of Deception (Tauren, Female)1
Orb of Deception (Troll, Male)1
Orb of Deception (Troll, Female)1
Orb of Deception (Undead, Male)1
Orb of Deception (Undead, Female)1
Orb of Deception (Dwarf, Male)1
Orb of Deception (Dwarf, Female)1
Orb of Deception (Gnome, Male)1
Orb of Deception (Gnome, Female)1
Orb of Deception (Human, Male)1
Orb of Deception (Human, Female)1
Orb of Deception (NightElf, Male)1
Orb of Deception (Nightelf, Female)1
Death Knight Soulbearer43
Baron Bloodbane45
Undead Scarab57
Rotting Worm50
Captain Redpath60

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.