Really like the Apocalypse Jockey. The depiction that was the only one to being close to faithfull to what was in Alien, although since the (original) jockey was this surreal, melted with itself, impossible being grown into machinery, I would preffer never to see it alive, as it was never the intention. Hence all if not most of its live depictions are underwhelming, and the thing had to be cheated into a suit instead for the prequels. Still, the Apocalypse thing has always been my favorite