Sebastian Asmodeus Grey

Bastian is a pirate hunter who's known with his bad fame. He's brutal, bloodthirsty and merciless. At the age of 12 he ate the Sand Sand fruit and obtained its powers. He's been addicted to swords in all of his life and started fighting with swords at the age of 4. He's good with the 3 swords technique but he prefers not to use it because he prefers using one sword - it's less tiring. He became a pirate hunter because his family was poor and needed to get money somehow. He's known with massacring whole crews in the blink of an eye. That's why he got the title 'Bloody samurai'. He was born in Wano country but left it when he got older.
He has a child from his former girlfriend but he doesn't know about it. He never looked for her again because he loved her and didn't want to put her in danger. Knowing how many people has he killed with his dirty hands, he didn't want to keep being with her, even though she's still always in his head.