No Brumm/Nymm? No Bretta? No Leg Eater? No Divine? No Snail Shaman? No Relic Seeker Lemm? No Millibelle? No Last Stag/Old Stag? No Midwife? No Fluke Hermit? No Eternal Emilitia? No Bardoon? No Mister Mushroom? No Grubfather? No Hunter? No Moss Prophet? No Myla? No Willoh? No Menderbug?
Also since you included bosses that don't even talk to you (Hollow Knight/Pure Vessel, Radiance, Nightmare King): Soul Master, Broken Vessel, False Knight, No eyes, Galien, Gorb, Markoth, Xero, Marmu, Elder Hu - All talk to you after their dream related fights. Mantis Lords are an honorable mention since they never explicitly talk to the player with a text box but do interact beyond their fight.
Also Pure Vessel is the same character as The Hollow Knight.
Also not only is the "The Shade Lord" description about the the Hollow Knight but also "The Shade Lord" isn't a NPC at all, beyond that not being an official name for the being that, y'know, comes out of and is controlled by the player/knight!
Also since you included bosses that don't even talk to you (Hollow Knight/Pure Vessel, Radiance, Nightmare King): Soul Master, Broken Vessel, False Knight, No eyes, Galien, Gorb, Markoth, Xero, Marmu, Elder Hu - All talk to you after their dream related fights. Mantis Lords are an honorable mention since they never explicitly talk to the player with a text box but do interact beyond their fight.
Also Pure Vessel is the same character as The Hollow Knight.
Also not only is the "The Shade Lord" description about the the Hollow Knight but also "The Shade Lord" isn't a NPC at all, beyond that not being an official name for the being that, y'know, comes out of and is controlled by the player/knight!
P.S. Lost Kin does not talk, he just nods his head.