Puppets Disappears When I Add Walk Behavior .

I notice your triggers shown are orange, an indication the puppet structure has changed and the triggers are no longer correctly bound to layers in the puppet. You might want to check that.

I also notice you have profiles for walk and head turning. I wonder if the wrong behavior is binding to layers. If you click on the behaviors (probably on puppet root), expand the sections like "views" and "handles". These should show the layers in the puppet that it has bound to. What you want to see is the Walk Behavior has the top level Left/Right profiles bound, and the Head Turner (I assume you have one) is binding to the right head turns. My *guess* is you might find it more reliable if for each Head layer you add Head Turner profiles on those layers and remove the Head Turner from the root of the puppet (if you put one there). That way its more reliable for Walk to find the top level layers and Head Turner to only find the head profiles. It does mean you will have several head turner behaviors (one per walk profile), but that is fine.

Does the Standing group have the Frontal tag associated with it?

For the Standing > head and Standing > body groups, what is the Mesh Shape setting for them? If you set them explicitly to Rectangle, does it help?