Hiruko (shinobi)

was once a great shinobi of Sunagakure, but upon his death, he became Sasori's 18th Human Puppet.

Trivia

 * In the manga Hiruko was just a normal puppet, not a human one.
 * can be translated to "leech child".
 * Hiruko is a Japanese Fisherman god. It can also be translated into "Ebisu".