Sail fiends are creatures that inhabit colder waters to the north. They are used to the cold, but high temperatures are lethal to them. They build dens in seaside caves, and they are highly territorial. They resemble bipedal lizards with their namesake large sails to aid in swimming. They are deep blue in colouration, with short arms ending in long claws, and stubby legs. Their long tails end in small fins, and they have tiny fins on their arms and heads. Territorial Marauders.