Warlords Doflamingo and Hancock are inspired by the real-world stories of Don Quixote and Medusa, and have relatives who are also based on characters from their real-world inspirations: Doflamingo's brother being named after Don Quixote's horse and Marigold and Sandersonia being based on Medusa's sisters Stheno and Euryale.
I think it's possible that Crocodile, being based on Captain Hook and the crocodile from Peter Pan, could have a Peter Pan figure in his own backstory if he ever gets one. Peter is Hook's archnemesis, having cut off Hook's hand, so perhaps a Peter-like character in Crocodile's past would have betrayed him and is the one responsible for Crocodile's refusal to trust people.
I think it's possible that Crocodile, being based on Captain Hook and the crocodile from Peter Pan, could have a Peter Pan figure in his own backstory if he ever gets one. Peter is Hook's archnemesis, having cut off Hook's hand, so perhaps a Peter-like character in Crocodile's past would have betrayed him and is the one responsible for Crocodile's refusal to trust people.
