Vana'diel Bestiary: Goblin Mugger  

Muggers like to attack human travelers and plunder all their goods. Ironically, they are rather weak and can sometimes misjudge their opponents, who will then strike back and take all the Goblin’s items instead.

Some/all of the information in this article has been culled from various FFXI guides, and translated by Elmer the Pointy.