Mermaids were the warlocks of the deep. They aided the Skrael and served in the armies of the Skrael King. The Mermaids had the abilities to shoot out Waterballs and Lightning bolts. They could do blasts like warlocks (with water) and shoot lightning like Fetch. What made them very unique was that they could go over water and land, often surprising their enemies and taking them unaware with a magical blast!