The animation controller inspector

The animation controller inspector is slightly different from the regular inspector found throughout Unity. While the regular inspector allows you to add components to the game objects, the animation controller inspector has a button labeled Add Behaviour, which allows you to add a StateMachineBehaviour to it. This is the main distinction between the two types of inspectors, but apart from this, it will display the serialized information for any selected state, substate, transition, or blend tree, just as the regular inspector displays the data for the selected game object and its components.