Hiddleston stated that he had to keep a strict diet before the start of filming because "Ken wants Loki to have a lean and hungry look, like Cassius in Julius Caesar.
Hiddleston menyatakan bahwa ia harus tetap melakukan diet ketat sebelum dimulainya syuting karena "Ken ingin Loki terlihat ramping dan lapar, seperti Cassius di Julius Caesar.