Veracun

Location
is the Mystery Merchant you will find in various locations around Velika Outskirts.
 * Event Arena north wall stairs
 * Antaroth's Abyss teleportal
 * Airship Platform, two possible places, southwestern platform and platform on west
 * Velika Outskirts Arena outside Velika North Gate
 * Bridge outside Velika West Gate
 * Horse ranch outside Velika West Gate
 * along the road that comes from Freeholds to beach, next to some ruins, basicly middle of nowhere
 * along the road south of Event Arena, next to some speakers platform
 * Near pile of goods between Free Traders Hall and the nearby dock

Mystery Merchant Shop
's shop information can be found in this list here

Trivia
The only Difference in the all of Arborea's Goblin merchants in the color of their backpack. has a what color Backpack?