Has a brief appearance from Delta Squad who are the protagonists from Star Wars: Republic Commando (2005). Supervising director Dave Filoni requested that the creative team incorporate Delta Squad into the plot. All four commandos' names (but not their identification numbers) were brought into canon in the episode guide for Witches of the Mist (2011).
The 'Jedi fortune cookie' message that opens the show reads "The path to evil may bring great power, but not loyalty."