Franky and Nico Robin are crew mates in the Straw Hat Pirates. They are good friends and get on very well with each other. They are cordial, friendly and wholesome. They first met when the Straw Hats arrived on Water 7, Franky's home island, and Robin became involved in a conspiracy, through the World Government's agency, Cipher Pol, to kill Franky's life-long friend, Iceburg. The pair first met when they found themselves as prisoners under CP9 and were sent to Enies Lobby to be killed. Franky played an important role in freeing Robin as Luffy was caught up fighting against Rob Lucci. After brutalising Spandam, who had grossly ridiculed Robin, both Franky and Robin successfully escaped Enies Lobby, alongside the rest of the Straw Hats. With Luffy wishing to have Franky join them, Robin played a key role by crushing his genitals (via her Devil Fruit), as the pain created a cover for Franky to finally cry over his role in his mentor's death and to forgive himself.Both of them share similar experiences regarding the World Government. Franky has spent most of his life living with the serious guilt for his actions that caused his mentor, Tom, to be taken away and killed by the World Government's secret agency, Cipher Pol. Nico Robin has been hunted her entire life by the World Government, since she was a child, as she was born on the island of Ohara that could read the poneglyphs, something the World Government made highly illegal. Robin being put under the impression that she does not have a right to live made her willing to be taken away by CP9 to be killed at Enies Lobby if it meant saving her crew, the Straw Hats. Their shared experience allowed them both to fully understand each other's feelings, especially on Franky's side, who was able to counter Robin's mindset on the value of her life, firmly telling her that her existence is not a crime.
