There is a cool, but short featurette on K-2SO on the official Star Wars YouTube channel. It includes behind the scenes shots of from some of the scenes that were ultimately cut from the movie. Namely the beach run scene. Check it out below... Spoilers.
I really loved K-2SO is Rogue One, and that is largely because of Alan Tudyk's performance. Alan brought a very contemporary feel to K-2SO, which is something I really admired about the movie as a whole. It would have been very easy for the creators to have kept the dialogue and delivery "in the style of" Star Wars Episode IV A New Hope, because the two films butt up against each other in canon. But at some point a choice was made to keep the film honest to it's place in time and allow the characters to speak and act in a very modern way. Perhaps this is one of the reasons Rogue One has been so warmly welcomed by audiences; because we get that familiar Star Wars feel, with a contemporary edge.
I mean, could you imagine any of the 1977 characters speaking the line above?
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Thank you for reading,