These are the remnants of what went over the animatronic:
An arm with the fake blood over the paint, not jointed it is missing the hand. A skin part from the body in dried foam latex. Three pieces of black fabric that were wrapped and sewn around the cables and moving parts.
The fabric has cut stitches along the largest piece which wrapped the cable bundle, the others have dried foam latex and rust marks from contact with the blood soaked puppet.