Daniel Byrd was a Human male, born in the mid-24th century, who resided on Earth. As a child, Byrd attended grammar school with B'Elanna Torres, where he would often point at her cranial ridges and tease her about her half-Klingon heritage, calling her "Miss Turtlehead". However, the teasing ended once Torres attacked Byrd while he was playing on a gyro-swing. (VOY episode: "Juggernaut")