An Enterprise ensign whose knowledge of his ancestors' traditions helps the crew identify Kukulkan.
Ensign Dawson Walking Bear is a Native American officer aboard the Enterprise in How Sharper Than a Serpent's Tooth. When an alien in a winged-serpent form takes control of the ship, Walking Bear recognizes it as Kukulkan from the legends of the Maya and Aztecs.
Walking Bear is transported with Kirk, McCoy and Scott to Kukulkan's ship, where his knowledge of ancient cultures helps them understand Kukulkan's history and riddle.