Rigid Body elements of a character rig (shown with the silhouette of the character)
Rigid bodies are elements that are used by Cascadeur to calculate physical simulations of character movements. They can be viewed in the Rigging Mode.
Unlike other elements of the rig, rigid bodies have parameters such as mass and principal inertia moments that are used for physical computations. These parameters can be seen and adjusted in the Outliner window.
By default, rigid bodies are named RigidBody0, RigidBody1 and so on.
Point Controllers are also visible in this mode and can be used for editing character pose.