I think that these creatures exist !
The first time that I saw digital phone it was in iron man1 (marvel cosmic).I was wondered to see this technology but nowadays these kind of phones exist .we all have a smart phone. There is much things that we saw in the movies as fiction today these fictions are among us!in the same way am persuade that aliens exist I don't know where exactly (maybe in others galaxies ).
Many of them don't believe in this fact .
Whom knows. ..maybe movies prepare our minds for seing these futures suprises!