Double-click on the created CharacterController or navigate to Window | Animator in the top menu—it will take us to the Animator window where all the magic is happening.
The Mecanim animation system is based around the idea of separating character behavior into different states with assigned animation clips to play while in any particular state. The transitions between states are defined by the set of conditions and are controlled by the Parameters.
Right click on the empty space of the Animator window and navigate to Create State | Empty.
This created our first state, to which we can now assign an animation clip by: