When Sark began to build his ice castle, local demons tried to attack him. He was not going to waste his energy on pathetic demon troops, so he created the Gwaine - magical birds that wielded weapons.

The Gwaine protected their master from attacks by enemies who tried to break into the ice hall and destroy his spell. The birds bravely stood in defense of their master while he was weaving his deadly ice spell. But they could not stand in battle against the demon Trayn.

The mighty blacksmith fought with the unusual birds and defeated them. However, he did not kill them, because he believed that these unusual creatures deserved to live. Instead, he immediately went to Sark, where he destroyed the cursed man and his Ice Crown.

After that, the Gwaine were free. They dispersed throughout the world to find a new master who needed brave little fighters. Today, many people and demons can be found with these birds, which help in hunting monsters.