I have to make a confession I'm afraid. I've been sloppy with my last question. I realized it just now when Arvens asked about the first movie implying humans with the "long before you". In fact I did think of the original movie, but I'm afraid my mind mixed up the German with the English version. The word human is mentioned in the German version and somehow my mind played a trick on me, so I mistakenly thought it was in the English version as well. Sorry!
To cut a long story short, the other two movies in which human/s is mentioned are LBT 2 and 4.
Again I want to express my appologies for that mistake. Whoever has an LBT trivia question in store may post it. If nobody does, I can think of another one (and I shall be more careful in the future).