Pirate Skeleton

Pirate Skeleton is a dead Pirate who had been dead in a ship on the sea, wearing a pirate bandana on the head as if it wants to emphasize it is a pirate. A topless pirate skeleton that skips around in purple socks. Scourge of the seven seas.

Ragnarok Online II
In RO2, this monster is known as Deck Hand Skeleton and can only be found in dungeons.