This is the first appearance of the newly redesigned Commander Wolffe, who has suffered an eye injury since his last unhelmeted appearance in Rising Malevolence (2008), necessitating a cybernetic replacement.
The 2003 book 'Inside the Worlds of Attack of the Clones' reported the death of Jedi Masters Eeth Koth and Sora Bulq in an exploding Gunship during the battle of Geonosis. However, since Bulq soon reappeared in Star Wars comics by Dark Horse, Dave Filoni asked George Lucas if he could bring back Koth as well.
The Jedi war room includes a number of new Jedi character models, including a Weequay Jedi (labeled Sora Bulq in design documents), a Nikto Jedi (labeled "Makis Shaalas"), a Roonan Jedi (named Halsey, though at one point named "Tukker Val Loo"), a new Twi'lek Jedi (Finn Ertay) and a blue Mon Calamari (Eekar Oki). The long-tailed beak nosed Cosian is Tera Sinube, who will feature in Lightsaber Lost (2010).
The 'Jedi fortune cookie' message that opens the show reads "For everything you gain, you lose something else."
Eeth Koth commands a Venator-class Star Destroyer in the Republic army named the Steadfast. In Star Wars: Episode IX - The Rise of Skywalker (2019), Allegiant General Pryde commands a Resurgent-class Star Destroyer in the First Order Navy also named Steadfast.