Greta Fernández replaced Aida Folch in the role of Sara when the production resumed after the Covid-19 outbreak.
In early versions of the script Lars Günther, played by Daniel Horvath(II), is described as an older man, at the end of his army career, outlawed for some never-explained act of insubordination. Among the actors who were proposed and contacted were Kevin Spacey and Leon Vitali. Some time later, a youthful version of the character was chosen to bring him closer to the ideal of the Übermensch.