Download model: jd Flour Sack rig for Maya
Show-object-joints can automatically distinguish objects and controllers.
Show-object-clear below: Returns to the original classification.
Select the square to make a ground.
Move top—null to the group of bottom—null.
This will give the effect of moving the upper body together.
The basic walking action can be completed by single-controlling the controller of the limbs. Do contact points first, and then add keyframes in the middle.
Botom – null to control body steering.
The same top_null to control the direction above.
Botom——null to add keyframes in the middle
Use Bottom_control to control the stomach up and down.
The video link of the final rendering: