Hi all, With my team, we work on a project with MOCAP animations. We have a skel with 3 spine and RollArms. When i retarget my animation on a humanoid skel in unity i have'nt the good animation because unity humanoid skel is so basic (2 spine, no rollarms..). The movement is misaligned.. (i think its because i have keyframe on my Spine2 and it not recognize by the basic humanoid skel of unity mecanim). So, my question is : It is possible to upgrade the basic humanoid skel and adding my additional bones ? I know , i can have my animation with generic mode but i want to try Humanoid for this project and use IK. Thanks for help !