Armature

The armature is the base of almost every sculpt and is a very important starting block.  It gives the sculpt an internal structure on which your material can cling to, making it more sturdy and secure.  Using an armature can also be a good way to save on material as you can mass out with newspaper, chicken wire, and tin foil. Some armatures for character animation include moving joints so that the sculpt may be positioned and moved.