The clones escorting Halsey's body to the Jedi Temple are the four Republic commandos created for the 2005 LucasArts video game.

Expanded Universe lore had previously suggested that the Jedi never knew Darth Maul's name, but the captured Neimoidians would have known it during the Naboo invasion. Maul's EU connections to Iridonia are also mentioned, though the episode reveals Maul was raised on Dathomir.

When Dooku looms over Savage after besting him in a lightsaber duel, he holds two lightsabers at his throat in a very deadly scissor formation. Ironically, this is how Dooku meets his end in Star Wars: Episode III Revenge of the Sith.

Dooku evidently holds a grudge: King Katuunko rejected Dooku's offer to join the Separatists in the very first episode of The Clone Wars, "Ambush."

The ship that the Jedi take to leave Toydaria is the Thief's Eye, the same vessel briefly glimpsed in "Ambush" and used by King Katuunko.

Dooku's escape hatch concealed in his quarters was previously seen in Season One, "Dooku Captured." Though Savage does not pursue because he is interrupted by Jedi intruders, it's questionable whether his enormous build would even fit into the escape tunnel.