Yes This is a tricky one... In it's prime the NPC was only pivotal to fulfill a quest that benefited one class,
RECAP YES Is it an NPC? Is it bigger than a gnome? Is it supposed that the NPC should be killed? Does the NPC wear clothes? Would one kill this NPC because it drops something that can be equipped? Is the NPC encountered as part of a quest? [Yes, but not primarily] Was the NPC introduced in PoP or before? Is the quest referred to earlier class specific? [In it's prime the NPC was only pivotal to fulfill a quest that benefited one class] NO Is it an item? Original EQ? Does the NPC give a quest? Is the NPC a playable race? Is the NPC found only in instanced zones? Is this NPC considered a rare creature?
OK, let me try to get at this another way. When the NPC was introduced into the game with or before PoP, did it have a role to play in a class specific quest?