The first addition to your alien theme for a while, and it's a doozy. (That's a good thing!) As others have said it just looks really - well - alien. Great job, and nice incorporation of the Hero Factory parts etc.
THIS is how I want to picture alien spacecraft! Absolutely brilliant design. I love the fact that there is no distinctive front end, it looks like either direction could be forward. A real imaginative build that relies on otherworldly notions of propulsion and organic engineering. I REALLY want to see more from this universe! Spectacular!