Sabine says "Stupid sand, gets everywhere!" An obvious nod to Anakin Skywalker's famous complaints about sand from Star Wars: Episode II - Attack of the Clones (2002).
Among Klik-Klak's possessions include a phase 1 Clonetrooper helmet, most likely recovered from the Battle of Geonosis ( Star Wars: Episode II - Attack of the Clones (2002) ).
Sabine has customized her Mandalorian jet pack with a new paint design, and has decorated Ezra's scout trooper helmet with a Phoenix Starbird symbol and a stylized Loth-cat face on top.
Imperial Captain Brunson is named after Rebel's Look Development Production Coordinator Jessica Brunson.
The Jumptroopers equipped with jet packs are based on the flying Stormtroopers developed for Star Tours: The Adventures Continue (2011).