George Lucas created Boba Fett in his April 1978 draft of "The Empire Strikes Back", basing the character on Sergio Leone's Man with No Name (Clint Eastwood). The character needed to be designed quickly, as Lucas had agreed for him to be featured in the "Star Wars Holiday Special" later that year. The character's design stemmed from initial concepts for Darth Vader, who was originally conceived as a rogue bounty hunter. While Vader became less a mercenary and more of a dark knight, the bounty hunter concept remained, and Fett became "an equally villainous" but "less conspicuous" character. Concept artist Ralph McQuarrie influenced Fett's design, which was finalized by and is credited to Joe Johnston.