Wakinyan

 (Standard Lakota Orthography: Wakíŋyaŋ) is the Lakotan word for thunder, and is most often used to describe a thunder spirit or thunderbird. In Dreams of Stone, Radical beseeches one of the great thunderbirds (Wakinyan Tanka, to give advice on how to defeat . It appears from her and the ' campfire, telling her the turtles were sent there by her grandfather to help, and to not forget the strength inside her, no matter how strong the enemy.