Monkey D. Lana, Lana for short, was born just before Luffy set sail. When Lana turned 4 months old, Luffy received a letter stating she had been kidnapped from her crib during a raid. Luffy continued on his hunt to become the Pirate King while also searching every ship for his sister. It's been 2 years, making Lana only years old. There is a fight between the Straw Hats and a crew that calls themselves the Serpent Skulls. The Captain is the on that led the raid, he heard about Luffy's sister and is the one who took her. Luffy finds Lana fighting against the captain with a small, but thick piece of wooden plank. She is starved, dirty, and beaten, with a broken arm. Lana doesn't let that slow her down though, she is furious and hates the Captain that took her. Lana is surprisingly holding her own and is strong regardless of her physical state or age but Luffy recognizes her instantly from the baby pictures he got, but before he can intervene Lana takes down 10 men with her wooden plank. Lana only talks like a two year old still learning.