This is the puppet created by Sasori from the body of Sunagakure's Third Kazekage. The efforts that Sasori went through to acquire the puppet made it his favourite. In the end, Sakura Haruno destroyed the puppet and in the anime, when Chiyo tried to use the head to attack Sasori, he simply incinerated it.
After being converted into human puppet, Sasori installed several weapons into his body, all of which were soaked in Sasori's special brand of poison, which kills the victim after three days of painful paralysis. This was also applied to the Kazekage's Iron Sand which he manipulated through Magnet Release — a skill Sasori later gained access to because of the fact that the puppet had been created from a corpse.
Retractable blades in the formation of a claw on the right arm.