Demolitionist

The Demolitionist is an NPC vendor that will spawn once the following criteria have been met:
 * There is an empty house.
 * You have an Explosive in your inventory. Note that the Bomb Fish will not count.
 * Merchant is present.

If the Demolitionist is killed, he will only respawn if the above conditions are met again. This means you must place an explosive in your inventory. Having them stored in Chests or other containers will not fulfill this requirement.

On the, the Demolitionist will lob Grenades at nearby enemies to defend himself.

Tips

 * The Demolitionist's weapons—Grenades—are surprisingly powerful, considering how early-on he may spawn in the game. Thus, he can be a great help during Blood Moons.

Names
The Demolitionist may have any of the following names:

Quotes
In a Corrupt world: When Dryad is present: When Nurse is present: When Arms Dealer is present: Only at night: Only during Blood Moon: During a party: After defeating Tier 1 of the Old One's Army:
 * "Dynamite, my own special cure-all for what ails ya."
 * "Explosives are da' bomb these days. Buy some now!"
 * "I wonder what happens if I... (BOOM!)... Oh, sorry, did you need that leg?"
 * "Check out my goods; they have explosive prices!" (This was bugged before 1.1.)
 * "It's a good day to die!"
 * "Trying to get through that ebonrock, huh? Try introducing it to one of my explosives!"
 * "Why purify the world when you can just blow it up?"
 * "I'm sure [Name of Nurse] will help you if you accidentally lose a limb to these."
 * "Would you rather have a bullet hole or a grenade hole? That's what I thought."
 * "Even [Name of Arms Dealer] wants what I'm selling!"
 * "NO SMOKING IN HERE!!"
 * "If you throw this one in the bathtub and close all the windows, it'll clear your sinuses and pop your ears!"
 * "Wanna play Fuse Chicken?"
 * "Hey, could you sign this Griefing Waiver?" (Referring to the term "griefing" used in video games, the act of ruining a player's game with actions such as destroying buildings)
 * "I've got something for them zombies alright!"
 * "Hey, have you seen a clown around?" (Indirectly references that Clowns throw explosives)
 * "There was a bomb sitting right here, and now I can't seem to find it..." (Possible reference to Clowns carrying bombs)
 * "You might want to be careful today. Us dwarves tend to have pretty explosive parties."
 * "I don't see why we can't just blow up those portals."

Trivia

 * The Demolitionist's appearance seems to be based on dwarves from many games, films, and works of literature. He is significantly shorter than other NPCs and has a beard. Furthermore, his mining helmet, lantern, and the fact that he sells Explosives fits the trope of dwarves preferring underground environments. This further proved in one of his quotes during a party.
 * Several of his names are also references to dwarf characters in fiction, such as Gimli from The Lord of the Rings or Beldin from The Belgariad. Fikod and Urist are generic dwarven names from Dwarf Fortress. Durim is a corruption of Durin, a dwarven king mentioned in J.R.R. Tolkien's books.
 * Morthal is a name of a Hold Capital in The Elder Scrolls V: Skyrim.
 * Ironically, he used to have the sprite for the Arms Dealer in the pre-release version.
 * The Demolitionist is depicted in a painting called American Explosive.
 * In one of his quotes, he calls ebonstone ebonrock.

History
Sprengmeister Démolisseur 폭파 전문가 爆破专家