To function in a HumanIK keyframing or retargeting workflow, your character needs a character definition. Creating a character definition is the process of mapping out the structure of your character's skeleton so that it can be understood by the HumanIK solver. Once the mapping process is complete, you can lock the character definition to make the skeleton ready for a Control rig.

Your approach to HIK character setup depends on whether you want to use an existing skeleton.

• To start with an existing skeleton, see Define an existing skeleton for HumanIK.
• To build a default skeleton, see Create and define a default HumanIK skeleton.