Much of the Ferrix set was a physical build, except for the top of the Time Grappler’s tower, which was a separate set digitally added to the rest in post-production.

Twelve sets of clone trooper armor were made by the costume department for the flashback sequences in Andor as all of the clone troopers in the Star Wars prequels were digital creations by ILM. The costume department also made 30 new sets of stormtrooper armor for the Ferrix revolt, as well as six riot trooper costumes.

Digital modular blocks from the original Death Star trench run miniature were added to the under-construction superlaser dish.

Union marches and New Orleans parades served as inspiration for the costumes for Maarva’s funeral. The musical instruments were designed to be played live by the musician actors, diegetic music played over the pre-recorded on-set playback.

The Ferrix revolt was shot over a total of 11 days on the Ferrix backlot set.

The Ferrix hounds seen with Pelga in Zorby’s Western Shiplot are actual canines in suits.

Besides the Clem and Maarva Andor funerary bricks, ten others were designed with the names of various crew members on them. They were dotted around the Ferrix set.

The language of Ferrix, Bazeese, is named after graphic designer Barry “Baz” Gingell, its creator.

Mon Mothma, when making a show of concern about Perrin’s gambling, mentions Canto Bight, the casino location from Star Wars: The Last Jedi.

In the flashback sequence where Clem Andor is teaching Cassian about refurbishing salvage, the script says he’s working on a Varium stepdown gasket in mint condition.

The brick that Andor touches while sneaking around Ferrix is Clem Andor’s funerary stone. It says, in Bazeese script: Clem Andor, and the dates 7896.39.5 - 7959.318.3.

The movements of the Ferrixian musicians, according to annotations in the script, are “Processional,” “Forming Up,” “Unto Stone We Are,” and “To The Sky.”

Pegla and his Corellian hounds do not ordinarily protect the Caleen salyard (they’re usually at Zorby’s Shiplot), but he’s been asked to keep an eye on it before the property is sold.