Windwalk-Type

I want to make my model in such a way, that if it uses a Windwalk-type ability, it will not look transparent. Perhaps this is not a modeling issue, but a skin issue, or maybe even a game option. All I know is that some of my models work with Windwalk (Appear transparent) and others do not (Disappear all together). From this I asume it is a modeling issue, and as such I would greatly apreciate any info about the effect. Thank you.

Well windwalk sets the units transparency to something like 60%. I dont think you can change this, although you might be able to use the trigger set unit vertex colouring and set transparency to 0% and see if that works.