Minifig Torso Generator

[Chris Böhnke]

Why do the Na'vi use 99114, and Toy story use 87858, when the same arms are used in both?

Good question, there even seems to be a third version for which we don't know the number yet (from Madame Maxime/Harry Potter and Jack Skellington/Nightmare before Christmas) which were released after the Na'vi.

Typically Lego keeps these numbers for assemblies even after a certain break, like they did with the hook hand torso. Bricklink at least claims they are all identical .