Aoi or Mad Doc is a female researcher working for the Marines. Her goal was to form her own crew like the Straw Hat Monkey d Luffy one day but for her own Marine. She became a researcher after hearing rumors of the Devils Fruit. She has serious and stoic emotion. She keeps stuff in her bra for safekeeping and for her research purposes. She has no quarells with pirates and she didn't believe in the Marines beliefs. She one day met Luffy and his crew in the Blue Sea, she later hired an assistant 