Hiruko (shinobi)

was once a great shinobi of the Sand Village. However, once he died, he became one of Sasori's first human puppets and one of his favorites. As a puppet, he serves as Sasori's "puppet armor" as he can hide inside of him. Chiyo states that Hiruko has changed since she saw him 20 years ago and indicates to Sakura that he has increased his overall defense with the shell he has on his back as well as a new arm-type addition. He contains several dangerous needle type attacks and a large scorpion tail. When Sakura and Chiyo charge at him, he removes his facemask, and launches a constant blast of needles from his mouth, similar to a machinegun. When that fails, he fires a strange cylinder shaped arm attachment, which is fired like a torpedo, ripping through the earth. Then it splits into hundreds of small wooden sticks, which each split into 10 needles, flying in all directions. When this attack fails, he tries to kill Sakura with his tail, but Chiyo stops his tail, allowing Sakura to destroy the puppet.
 * Seiyu: Yutaka Aoyama

Hiruko (蛭子) can be translated to "leech child".