You may add any individual program
Cloud Plans https://creative.adobe.com/plans
-Do read the Subscription Terms https://www.adobe.com/misc/subscription_terms.html
-Purchasing FAQ https://forums.adobe.com/thread/1926340
Character Animator is not offered as a perchasble app as far as I can see. Do you think Adobe will be merging it into Photoshop cc as they have done with After effects? I can see that you can add an individual program but not with Character Animator.