One solution is to build an animated character as if it had an internal skeleton.

Invertebrates don't have a skeleton of bone, either internal or external.

The mesoglea serves as an internal skeleton, supporting the body.

The colonists called them Spiders, though they were warm-blooded and had internal skeletons.

These animals have an internal skeleton and make up about 4% of the sea's animal population.

A small number of dinoflagellates contain an internal skeleton.

The development of internal skeletons came later, with the first fish.

"And it's not strong enough to be part of an internal skeleton."

The robust internal skeleton will be modifiable to serve as a platform for future designs.

No internal skeleton is known outside of the head shield.