3:00 - El-Les: "CT-782 seems to follow his own path. He can't do it all alone." Leia uses this same phrase to describe Han in A New Hope: "He's got to follow his own path; no one can choose it for him" [1:42:47].
5:05 - Bric: "If you two would focus on fighting droids as much as you do fighting each other, you might stand a chance out there." Perhaps coincidentally, this bears some similarity to Obi-Wan's comment to Anakin in Attack of the Clones: "If you spent as much time practicing your saber techniques as you do your wit, you would rival Master Yoda as a swordsman" [16:30].
8:29 - Commander Colt: "Start the citadel challenge, version THX, variable 1138." This is a nod to the title of an-other George Lucas movie, THX 1138. The number 1138 occurs a number of times in Star Wars.
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Bric's armor is similar to that of General Veers, Dengar, and the snowtroopers in The Empire Strikes Back (as is Moralo Eval's armor in S4E16 - "Friends and Enemies"):
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