The fundamental concepts related to the field of interpretive art and essential tools for the foundation of a professional of audiovisual production. Acting as a phenomenon comprises a series of principles and aspects necessary for the construction of arguments and characters as units’ structures of great importance for Digital Animation. Part of these principles are related to text from the point of view of who acts (objective, conflict, dramatic action), as well as with the execution of the action (corporality, gestures, vocal resources). The complexity of the action in the moment of its execution requires that those who create stories and characters confront such complexity as a way of understanding it from their own psychophysical resources.