The episode begins with the title card "In Memory of Ian Abercrombie" -- the voice of Palpatine on the series passed away on January 26, 2012. This episode features some of his last recorded performance as Palpatine and Sidious.
This episode marks the first appearance of Darth Sidious "in the flesh." In all other appearances, he has been a hologram.
That Darth Sidious fights with two lightsabers is evident in Episode III -- he has two lightsabers in Revenge of the Sith, though he never has an opportunity to wield them simultaneously since he loses one in his fight with Mace Windu before dueling Yoda.
Obi-Wan Kenobi is wearing his Rako Hardeen disguise (from Season Four's "Deception" arc) when he arrives on Mandalore.
The much-battered Twilight now sports a cartoonish illustration of Anakin as a boy Podracer pilot, with Aurebesh text that says "WIZARD!!!" The Twilight has not been seen since Season Two's "Children of the Force." Nose art by Carlos Sanchez.
There are Moogan traders delivering supplies to the Mandalorian capital of Sundari. They were last seen in "Corruption" in Season Three. This may be an indication that since he's been reinstated to power, Prime Minister Almec is calling back his old allies.
Korkie, Amis, Lagos, and Soniee were the teenaged cadets previously seen in Season Three's "The Academy" episode.
Though many fans assumed that Bo-Katan was her full name, the hyphen indicates that it has always been intended as just one name -- her given name. This has concealed her full family name of Bo-Katan Kryze.
As Savage dies, he transforms to his original, pre-monstrous form as Mother Talzin's dark magicks drain from his body.
The small portable shields incorporated into the Death Watch loyalists' gauntlets were developed after the gunfight with the super commandos was laid out, since the large open space of the combat area provided no suitable cover for the troopers.
