Plague Doctor (NPC)

The Plague Doctor is a NPC that can spawn when you have a Lunatic Cultist trophy in a room along with the Book of Plagues inside a chest or an Item Frame. He wears a gray coat, a black version of The Clothier's hat, Lunatic Cultist's clones' mask and holds a iron/lead version of the Orichalcum Halberd.

Names

 * Malfatto
 * Charles
 * Nostradamus
 * Giovanni
 * Niall
 * Ambroise
 * Paracelsus

Quotes

 * "I heard one of us has been locked in a laboratory. Do you know anything about it?"
 * "If the air was not so full of sickness, I would take off my mask. The smell of mint is killing me."
 * "I hope that the Dungeon Coven leader's ghost is fine with me taking his mask... what do you mean he can come back to life?"
 * " can not heal the Great Pestilence, and 's techniques are too primitive. Why am I always the only doctor in the house?" (Only if they are both present)
 * "Why does  look like he has the sickness? I am surprised that  has not put him in a gas chamber yet." (Only if they are both present)
 * "The people outside look like they reached the Level 7 of Danvel's Curse!" (Only during a Blood Moon)
 * "Please sir/lady, stop asking me am I actually a Lihzahrd. Go back to ." (Only if the Witch Doctor is present)
 * "You seriously want everyone in the radius of a mile to become my patient" (When there is over 12 NPCs in the same area and you have the Unholy Water in your inventory)

Sells

 * Book of Plagues: 30 Silver Coins
 * Purification Powder: 50 Copper Coins
 * Green Solution: 70 Copper Coins
 * The Remedy to cure all Ills: 6 Gold Coins
 * The Noble Staff: 3 Gold Coins

Other Functions
The Plague Doctor has two other functions:
 * He can dispel the Plagued, Poisoned, Venom, Blackout, Confused, Cursed Inferno, Feral Bite, Stinky, Slime and Shadowflame debuffs for 2 Gold Coins
 * He can be hired to cure The Corruption for 4 Gold Coins. If you travel to it, you can see him wandering near the edge, using the Purification Powder on trees and hitting the ground with his staff (Which blade/point is dipped in the Green Solution) (That also acts like the Purification Powder). If he comes near a chasm, he uses his staff to cut down a tree and create a small bridge over it out of its wood. The curing process lasts 10 real life minutes.

NPCs Responses
The Merchant: "I don't trust . His products should get through the highest-class inspection"

The President: "Yes, I remember . He got twenty medals for the doctor of the year... and his wife got 13 for blood drinking."

The Nurse: "I got fifty reasons why  should lose his doctor licence. The first being his curing methods include making them bleed."

Trivia

 * The name Malfatto is a reference to a Assassin's Creed character, who is also a Plague Doctor.
 * The name Charles is a reference to Charles de Lorme, the person who designed the Plague Doctor costume.
 * All of his other names are the names of notable real life Plague Doctors.
 * The quote "Please sir/lady, stop asking me am I actually a Lihzahrd. Go back to ." is a reference to the fact that the Witch Doctor is possibly a Lihzahrd.
 * The quote "If the air was not so full of sickness, I would take off my mask. The smell of mint is killing me." is a reference to the fact that the Plague Doctor masks' beaks are filled with strong-smelling herbs, like mint.
 * As hinted by the Nurse and the President NPCs, it's possible that the Plague Doctor's wife is the Vampiress. However, this conflicts with her liking tomato sauce instead of blood.