Dryad

thumb|166px|left Dryad is an NPC that will move in to an empty house once you've killed a boss. The easiest boss to kill would be the Eye of Cthulhu or if you have a flail weapon, the Eater of Worlds.

Apparently she is also 500 years old, as one of her sayings is "I wish that gun seller would stop talking to me. Doesn't he realize I'm 500 years old?"

Quotes
-If the merchant is present -If the arms dealer is present
 * "Whats this about having more 'bark' than bite?"
 * "So two goblins walk into a bar, and one says to the other,'Want to get a Gobblet of beer?!'"
 * "That merchant keeps trying to sell me an angel statue. Everyone knows that they don't do anything."
 * "You must cleanse this world of its corruption."
 * I wish that gun seller would stop talking to me, doesn't he realise I'm 500 years old?
 * "The sands of time are flowing. And well, you are not aging very gracefully."
 * "It is a evil moon tonight. Be careful. (During a blood moon.)

There is a rumor she sells more advanced items farther in the game; this, however, has not been proven.