Second appearance in live action of the droid Chopper after his debut in Rogue One: A Star Wars Story (2016).
Toil and trouble (the name of the episode) is a phrase often associated with witchcraft. This episode features the first live action appearance of Nightsister Magick, powers related to the Dark Side of the Force.
Hera has a son named Jacen. In a series of novels set after the events of 'Return of the Jedi,' Leia and Han Solo had twins named Jacen and Jana.
First on-screen appearance of the Denab system, the system and the planet Denab were previously seen in the video game Star Wars: Rebellion (1998) and mentioned in the game Star Wars: The Old Republic (2011).