The design of the ice planet of Orto Plutonia and cold weather gear worn by the Clone Troopers is based on early Star Wars: Episode V - The Empire Strikes Back (1980) concept and costume art by Ralph McQuarrie, Joe Johnston and John Mollo.
C-3PO refers to Thi-Sen as "Son of Suns," another artifact from old Star Wars scripts. Old drafts made reference to a prophesized hero being named "The Son of Suns," but it never made it into any of the movies. Some Star Wars fans think the Skywalker/Chosen One prophecy might make mention of "Son of Suns," but its casual use in Thi-Sen's title suggests that's not the case. Also, some fans mistakenly believe that the crowds during the Coruscant or Naboo celebrations in the movies shout out "the son of suns," but this was debunked in 2007.
The 'Jedi fortune cookie' message that opens the show reads "Arrogance diminishes wisdom."
The Talz use Narglatch as their mounts. This creature was originally designed for Star Wars: Episode I - The Phantom Menace (1999) by Terryl Whitlatch and was to be native to the planet Naboo.
The Pantorans are of the same species as Baron Papanoida, an alien briefly seen during the opera scene in Star Wars: Episode III - Revenge of the Sith (2005), played by George Lucas in a cameo role. At the time, Papanoida was originally described as a Wroonian, but the popularity of the Pantoran species in this story caused him to be retconned into the same species. Papanoida makes his first animated appearance in Sphere of Influence (2010).