@kmohyudin:
Okay, here is how it goes. Just pick a character and state his/ her biography as you perceive it. No need to quote any sources
Going off this part… ^
(And this is a "biography," which typically includes more than just a psych profile)
Crocodina was born in the West Blue 25 years before the execution of Gol D. Roger. Despite the public's lack of love for pirates prior to Roger's death and the Great Age of Piracy, the girl always lusted for the power and freedom that was evident in the life of a pirate.
But no one would take her seriously, given the fact that she was incredibly beautiful and petite (nor did she excel in any particular fighting style). She was laughed at upon her attempts to join with pre-existing crews, so she decided to form her own organization. This also, however, met with little success as every potential member left disappointed when he or she realized that "Ms. 0" was simply a little girl. Up-and-coming assassin Daz Bones was particulary averse to having his time wasted, and responded to the insult by slashing Crocodina across the face and cutting off her left hand.
"If Caterina Devon could do it, why not me?" she lamented. Crippled and wallowing in despair, she sought out the miracle worker of legend, Emporio Ivankov. Iva was resistant at first, but he could not pass up an opportunity to improve someone's life by switching their gender, and so, Crocodile was born. With a commanding presence and a badass scar, he covered his stump with an impressive golden hook and set out to assemble a crew.
After wrangling a few disposable crewmen, Crocodile set out for the Grand Line. He'd read about the anicent weapons in the Great Library of Ohara (near his home island in the West Blue) and made the Kingdom of Alabasta (where one weapon was supposedly stored) his first primary stop. Without any power, influence, or impressive abilities as a captain, he found out very little. He was thrown from the palace after inquiring about the weapon and his limited research in the deserts of Alabasta yielded no hint of Pluton. In one oasis, however, he discovered a tree bearing a very rare fruit.
Crocodile temporarily gave up his dream of acquiring Pluton, but instead became a notorious-enough pirate (and logia) to capture the attention of the World Government. He accepted the position of Shichibukai without hesitation, and immediately began assembling the members of the organization he dreamed of long ago, including the assassin who'd crippled him and the Demon of Ohara, among others.
And the rest is what we know already.
Crocodile lusts only for power, trusts no one, and is extremely adept at using those around him to his advantage. His greatest fear is that his secret might be revealed by Ivankov, as he still bears physical and emotional scars to remind him of how powerless he was early on in life. As such, all of his actions are motivated by trying to improve upon or protect his reputation.
...Okay. So I digressed into fan fiction, but nothing I've said is explicitly refutable and it's entirely supported by Crocodile and Ivankov's interaction in Impel Down.