In the Animator Controller, what shape represents a Sub-State Machine?

In the Animator Controller, a Sub-State Machine is represented by a hexagon shape. This representation is significant because it visually distinguishes Sub-State Machines from other components in the Animator Controller. A Sub-State Machine allows animators to organize complex animation behaviors by encapsulating related states within a single entity, which can improve the manageability of animations in a project.

The hexagonal shape serves as a clear indicator that the contained states can be grouped together under one logical grouping, which may include multiple animation states and transitions that are conceptually related. This structure facilitates a more organized workflow, allowing artists to create layered animations that can easily be modified or reused across various animations.

In contrast, the other shapes represent different parts of the Animator Controller, such as individual states or transitions, and do not convey the same organizational functionality that a Sub-State Machine provides. Thus, the hexagon stands out as the correct representation for this purpose.