Muscle Joints

Muscle joints are simple lightweight joints that can be great for preserving volume, or some piston type parts

Blend Joints

Those are simple joints that rotate a percentage of the main joints. And they have a lot of attributes to make them translate or scale based on their parents' rotation

To add one, just specify the joint in the list.

Then after running that function you'll get that joint. And you can adjust its values:

Mirroring and Saving those values can be done with the DEFAULTATTRS options.

Note

the DEFAULTATTRS thing is a common workflow throughout all the kangaroo tools. Especially when we come to the face