Animation Rigging

Unity's Animation Rigging package allows you to set up rigs that dynamically modify your animations with things like Multi-Parent Constraints and Inverse Kinematics (which works on both Generic and Humanoid Rigs where Unity's inbuilt IK system only works on Humanoids).

The official Working with Animation Rigging tutorial explains how to use it. Using it with Animancer is no different from using it with Animator Controllers.

Here are some of its features:

Damped Transform

Multi Parent Constraint

Inverse Kinematics