The action of activating the Character map you have defined is called characterizing. When you characterize a model, it is no longer just mesh and a skeleton, MotionBuilder recognizes it as a character that can be animated.
Once you have a characterized character, you can select what type of motion source you want to control it, such as a Control rig, Actor, or other character.
You cannot edit the Mapping List for a characterized character. If you need to edit the Mapping List, for example to add an object to define the floor, you must temporarily disable the characterization.
There are two ways to characterize a character: manually and automatically. The way you set up and characterize a character depends on how you named the bones of your character model’s skeleton.
