A few months back, I did a piece on Comics Should Be Good about the moments during the Star Wars comics where Luke and Leia kiss, moments that look kind of odd in hindsight when we discover in Return of the Jedi that Luke and Leia are twins. However, there are some similar points in the Star Wars films that are a bit awkward along those same lines, primarily the kiss that Leia plants on Luke in Empire Strikes Back which is, well, far too much of a kiss for either Luke and Leia to feel good about upon thinking back on it.
This, though, leads to the question that has been on many Star Wars fans minds ever since - did George Lucas intend for Luke and Leia to be siblings during The Empire Strikes Back?
I think that the answer is no, although interestingly enough, George Lucas has never expressly addressed the topic, which makes it difficult to get a definitive answer. Part of this comes along with the whole "Lucas had everything planned on from the beginning!" myth that Lucas himself has had a hand in perpetuating. For instance, we've already addressed in an old Movie Legends Revealed about whether Lucas intended for Darth Vader to be Luke's father originally, but Lucas himself has been rather mum on his intent with Vader, even though it seems pretty clear by now that he did not intend the two to be father and son. His silence allows the "Lucas planned everything years ago!" myth to gain ground.
Anyhow, as I featured in the aforementioned legend about whether Darth Vader was Luke's father, screenwriter Brackett's original draft of the script for The Empire Strikes Back included a scene where Luke is visited by the spirit of his father, Anakin Skywalker. Here is their initial exchange:
You've grown well, Luke. I'm proud of you.
(Luke, not knowing what to say, says nothing)
Did your uncle ever speak to you about your sister?
My sister? I have a sister? But why didn't Uncle Owen....
It was my request. When I saw the Empire closing in, I sent you both away for your own safety, far apart from each other.
Where is she? What's her name?
If I were to tell you, Darth Vader could get that information from your mind and use her as a hostage. Not yet, Luke. When it's time...
(he looks gravely at his son)
Luke. Will you take, from me, the oath of a Jedi knight?
Slowly, proudly, Luke draws his light saber and activates it, bringing it to the salute. Skywalker does the same.
Brackett's screenplay was based on a story treatment by Lucas, so clearly, Luke DOES have a twin sister in this movie. However, it is clear that it is NOT Leia, as Brackett initially names the sister, Nellith, but then she crosses the name out.
Even after Lucas revised Brackett's screenplay to introduce the Darth Vader as Luke's father bit, he also kept in a sequence where Luke and Leia discuss their feelings for each other, with Luke telling her she is better off with Han. An even LATER revision included an almost SECOND kiss between the two!
So no, I do not believe that Lucas intended Leia to be Luke's sister during The Empire Strikes Back. Around the time of Empire, Lucas spoke of the trilogy of films that would follow the end of the original trilogy:
Q: At one point there were going to be twelve Star Wars films.
I cut that number down to nine because the other three were tangential to the saga. Star Wars was the fourth story in the saga and was to have been called "Star Wars Episode IV: A New Hope". But I decided people wouldn't understand the numbering system so we dropped it. For Empire though we're putting back the number and will call it Episode Five: The Empire Strikes Back. After the third film in this trilogy we'll go back and make the first trilogy, which deals with the young Ben Kenobi and the young Darth Vader.
Q: What is the third trilogy about?
It deals with the character who survives Star Wars III and his adventures.
This is important because it lends credence to Gary Kurtz, producer of Empire Strikes Back, who said to TheForce.Net:
She's not his sister. That dropped in to wrap up everything neatly. His sister was someone else way over on the other side of the galaxy and she wasn't going to show up until the next episode.
So at the time of Empire, Lucas was intending to do future films with Luke, just like Kurtz says he was planning on doing. But then Lucas stopped at Return of the Jedi. Kurtz says that Luke was going to meet his twin in the new trilogy. If that is true and Lucas decided NOT to have a new trilogy, then it makes sense for him to have Leia revealed as the twin in Return of the Jedi, as it allows him to wrap up his intended plot for Luke/Leia.
Yes, in Empire, Luke speaks to Leia through his mind, which later is part of their connection as siblings, but I think that is more of a retroactive thing where Lucas said, "Hey, we had Luka talk to Leia through her mind -- why not have THEM be twins?" As it also neatly wraps up the love triangle that Lucas was clearly intending on wrapping up no matter what.
Plus, this would naturally explain away why Lucas had siblings kiss in Empire. As they WOULDN'T have been siblings when it first happened.
Since the only definitive answer exists in George Lucas' brain, I suppose we'll never know for sure, but I think there's enough evidence that I'm comfortable going with the legend as...
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