Species Location Weapon Abilities The quicksand lurker or plunger lurker (depending on the context), also known as the fireball lurker, is an enemy in The Precursor Legacy. It is a small, purple lurker indigenous to the mud ponds of Misty Island, also encountered at the end of Mountain Pass. They act primarily as sentries, guarding areas of the island at fairly even spells. They can venture out on specific assignments, however, such as detonating explosives in Mountain Pass, though you will never encounter one out of its pond while on Misty Island.