Truffle

The Truffle is an NPC that sells various items such as the Autohammer, Hammush and Mushroom Spear. To get the Truffle to move in, there must be housing in a surface Mushroom Biome during Hardmode.

Items sold
Once the Truffle has moved into a house, he sells the following:

Names
Truffle may have any of the following names: Maitake, Muscaria, Shimeji, Amanita, Porcini, Reishi, Shiitaki

Quotes

 * "There's been such a huge rumor that's being spread about me, 'if you can't beat him, eat him!'"
 * "Everyone in this town feels a bit off. I woke up to the clothier chewing on my foot last night."
 * "As if living underground wasn't bad enough, jerks like you come in while I'm sleeping and steal my children."
 * "you haven't seen any pigs around here have you? My brother lost his leg to one."
 * "I tried to lick myself the other day to see what the big deal was, everything started glowing blue."
 * "Between you and me, [Dryad's name] is the only one I trust. She is the only one here who hasn't tried to eat me or use me in a potion."
 * "Everytime I see the color blue, it makes me depressed and lazy."
 * "I don't know the 'Truffle Shuffle', so stop asking!"