Dave Filoni is using Ahsoka to take a deep dive into the Star Wars franchise's lore, so perhaps we shouldn't be surprised that the second episode - "Toil and Trouble" - referenced two key characters from the Knights of the Old Republic video games.
As we first revealed on SFFGazette.com, the first nod comes when we follow Ahsoka Tano and Hera Syndulla to the shipyards on Corellia where they're tracking down an HK-47 assassin droid. In both Knights of the Old Republic and its sequel, The Sith Lords, that same model was part of Ebon Hawk's crew.
Right at the end of the episode, Morgan Elsbeth finishes assembling a giant hyperdrive ring she's named "The Eye of Scion," with that choice of moniker likely a nod to The Sith Lord antagonist, Darth Sion.
He lived in the time of the Old Sith Wars and fought for Exar Kun's Sith Empire until the day he was struck down. Rather than die, though, Sion found that by calling on his pain, anger, and hatred, he could rise from certain death and achieve immortality, at the cost of all-consuming agony.
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Seeing as Elsbeth has now confirmed her connection to the Witches of Dathomir, we perhaps shouldn't be surprised that she's inspired by a Sith Lord. The fact he resurrected himself may well tie into rumours we've heard about undead Stormtroopers too.
On another note, the Ahsoka premiere also introduces a live-action version of Governor Ryder Azadi (you can read more about that by clicking here). However, you might have missed Jai Kell, played by Vinny Thomas in Ahsoka and voiced by Dante Basco in Star Wars Rebels.
Now a Senator, he first met Ezra Bridger while attending the Academy for Young Imperials on Lothal. Freed by the young Jedi, he eventually joined Azadi's Lothal resistance group and frequently fought alongside the Ghost crew.
The first two episodes of Ahsoka are now streaming on Disney+. You can check out our review here.