Board Thread:Naruto Discussions/@comment-1783334-20160928055427/@comment-24793983-20161003045553

^The one directly above his post, I suppose.

Here's one from the wiki. It was on Hiruko, Sasori's human puppet:

He was said to have been a great shinobi while alive. He was powerful enough that Sasori chose to make a human puppet out of him.