Hovering enemy movement pattern for robots

[Roycesraphim]

So I've been watching Exosquad and some of the fights got me thinking of Code Geass and that let me to want some more from my robot fights.

 

Ideally, I'd get something looking like a mech but moves like this.

 

http://www.youtube.com/watch?v=0_kU5CRGKXE

 

The main thing I want is that flightly, fast moving glide style that makes it hard to track.