Mukade

Mukade was a Jonin from Sunagakure and later left Suna and became a servent of the Akatsuki. He was used, along with fellow missing-nin Yura, sacrificed, and transformed into Kisame Hoshigaki as a pawn and was sent to stall Team Guy while the Akatsuki extract the One-Tail Shukaku from Gaara, the 5th Kazekage, and seal it. Might Guy opened the 6th inner gate and killed the Kisame clone, only to find that he had actually killed Mukade in the process.