Something I've seen is that basically every post about the Voltron live action movie seems under the assumption that it will be based on Legendary Defender, without a shadow of a doubt.
...you guys do realize that the most likely possibility is that it's going to be based on the 80s Defender of the Universe series, right? Unless there's confirmation somewhere that it's based on Legendary Defender, the most likely outcome is that it will be based on the 80s series because that's where the franchise began.
Legendary Defender was an adaptation of the four previous series that came before it- the original Golion anime, Defender of the Universe, 3rd Dimension (although I don't know enough about third dimension to confirm if it has influenced it, I wouldn't discount the possibility), and the much lesser known Voltron Force 2011 series (which is actually where the concept of Keith being part alien came from). I wouldn't be surprised if Force is also where Legendary Defender got the concept for the lions having sentience.
The point is, Legendary Defender is not the definitive Voltron that exists. If they're making a live action film, the highest possibility is that they're going to want to go off the nostalgia of fans of the 80s series. Again, though, if they've confirmed that it's based on Legendary Defender, then the point of this post is moot.
