The character of Damien himself was also first featured in this episode; although he appeared as a background character in a handful of future episodes, he seldom has a speaking role and is never again featured as prominently as he was in "Damien". The character was inspired by Damien Thorn, the child antichrist character in the 1976 horror film "The Omen". The music which plays in the episode whenever Damien performs magic is also directly inspired by the music from that film; that same demonic chorus would later be reused in the twelfth season episode "Britney's New Look". (The lyric "Rectus Dominus" repeatedly sung by the demonic chorus in the episode translates from Latin as "Ass Master".) The scene in which the boys tell Damien his mom is "a real dog" is also a reference to "The Omen". In that film, the actual Antichrist's mother was a jackal.