Joss Whedon said that his previous television shows were based on ensembles, with S.H.I.E.L.D. being based in part on the Buffy the Vampire Slayer episode "The Zeppo".
Production on the pilot, under the name of S.H.I.E.L.D., took place from January 23[REF] to February 12, 2013[REF] in Los Angeles, to accommodate Joss Whedon's busy schedule [REF].