I don't know, it seems that there are a few characters capable of filling more than one role. Anyways, here's my CS.
Name: Silas "Chain" Drake
Age:25
Appearance:
Instead of white hair he has black hair, with streaks of silver in it. And he has chains wrapped around his forearms and shins. Ignore the multitude of swords.
Crew Position: Quarter Master, tactician/strategist
Power Type: Devil Fruit, Weapon Master(Is capable of using any melee weapon aside from a shield.)
Personality: His appearance leads to many people that don't know him thinking of him as a troublemaker. That is not the case... most of the time. He's often calm and focused on a task, or found doing random things to keep himself busy. He's not one to start a conversation, which makes him a little anti-social in some eyes. In general, he enjoys quiet when he can get it and is often found reading or carving under such circumstances.
History: Silas was one of the unfortunate kids born into a world where their parents had a debt they died with, and said debt got passed on to the child. He was 11 when this happened to him, and he found himself working as a servent in a noble's house, one with a shady background that people didn't like to speak about openly. The man wasn't kind, but neither was he cruel, he did however have an underground in which most of his finances came from, investing in both slaves and using local gangs to extort money.
This went on for three years when Silas decided he needed to get back at the noble in some way, due to his discovery that he was lying to Silas about his parents' debt to get him to work for him longer. He did this by sneaking into the storage and eating a really strage looking, and disgusting, fruit that he knew had cost the noble a lot of money. Unfortunately for him, he was found out and disposed of. Thought dead, his body was toassed into a nearby river. He would have been dead if he wasn't found downstream by an old man returning home from his school.
Nursed backed to health and effectively adopted by the man, Silas soon found himself going to the old man's school, which turned out to be a dojo for many different forms of combat. Living with him for the next five years, Silas learned how to fight and made friends, essentially living the life that was denied to him for those three years of servitude. At the age of 19 he bid his farewells to his home and left the island, but not before exposing the noble's corruption to the marines and government.
He has since been doing mercenary work, taking down bandits, bodyguarding, and oddly enough even taking charge of a group or place's supplies. Is currently being paid to return an inn's inventory to acceptable levels.
Devil Fruit:Chēn-Chēn no Mi (The Chain-Chain Fruit)- This fruit grants the ability to manipulate and shape chains that he spawns from his body or comes in contact with. As you can imagine, this allows it to be used in a variety of ways, though Silas usually uses it for combat.
Fruit Type: Paramecia
Abilities: Silas was trained, and he trained himself, in the use of all melee weapons, from knives and daggers to swords, spears, even clubs and staffs. When it comes to hand-to-hand combat, he is effectively a street fighter, improvising and using the environment to his advantage.Thanks to his devil fruit powers, he is able to create any weapon he wants. That said, his power is also used for a multitude of ways to fight and defend himself and others.
Others: He has yet to find a goal in life, which makes him both envious and somewhat respectful to those who do. He favorite kinds of books are story books, followed by the more military ones.