The Iron Pirate known as the General Franky is a mech created by combining the Black Rhino FR-U IV and Brachio Tank Unit V. It was created by Franky.
The General Franky is a combined robot from the manga/anime series One Piece that was created by Eiichiro Oda. The series first began serialization in Weekly Shōnen Jump magazine on August 4, 1997. It first appeared in One Piece Volume 64 CH. 636 "The General from the Land of the Future", and it's first anime appearance is in One Piece - Episode 557 "Iron Pirate! Here Comes General Franky!".
The Iron Franky was based upon the designs Franky discovered at the long abandoned labs of Dr. Vegapunk in the Future Land Baldimore. It's constructed out of a shape memory alloy known as "Wapometal".
It was during the battle of the Straw Hat Pirates against the New Fish-Man Pirates at Fish-Man Island that Franky revealed his two new inventions, the Black Rhino FR-U IV then the Brachio Tank Unit V. They both were performing well in the fight, but the ground was later filled with pitfalls to stop both vehicles. With both crashed inside the same hole, Franky tossed Usopp, Nami, and Chopper from the tank, then combined them with him inside to make the Iron Pirate "Franky Shogun". The boys were ecstatic, but the girl's didn't see the big deal.