Pretty cool that they can walk around on their own... but:
* Shite sound effects, the green one's voice sounds like a camera taking a photo.
* Wibbly wobbly heads... as they walk their upper body shimmers and shakes around like nothing else. Needs some dampening and decoupling from the legs to make it seem more lifelike.

Still, pretty darn cool nun-theless.

kind of cool I guess.. if I've got room for a shimmering current of "condensed air" then I've got room for a piece of frosted glass which doesn't swim around

Is this relying on the different refraction indexes between the body of modified air and the surrounding air?