3D 2D Projection is doing something?

I'm trying to make use a 3D projection RPG but the 3D object keeps showing the transparent part over other 3D objects and fog... Any suggestions on how to fix this?

I just realized I posted this in the wrong category.

Sorry, this is my first time I've used forums and I'm trying to figure this out.

BrickwallWAV If you are using fog effect then put all one side (billboard) 3D objects on another layer with distance camera order and for each one billboard add fog effect, but keep in mind that this will eat gpu if u have a lot of billboard sprites.

All others objects like ground and all faces 3d boxes,traingles put on the layer under the billboards layer with fog effect and camera z order option. You can also insert all billboard objects to family object with fog effect on it.

Cheers