Ran (ラン, Ran?) is a Kuja pirate. She's the one who initially spoke with Momonga. She seems to be one of the more knowledgeable and prominent Kuja in the pirate crew.

It was her that revealed to a younger amazon the story behind Hancock's supposed stone powers and why no one allowed into the castle during her bath time. She was also the one who initially recognized Luffy's Haki as Haoushoku Haki in the Battle arena as well as recognizing his strength when he felled Bacura in a single blow. She was also given the newspaper of Ace's upcoming execution which she gives to the Elder Nyon. After the Trials of the Arena, she welcomed backed a newly de-petrified Marguerite, and was also seen laughing alongside her fellow Kuja and enjoying the party afterwards. She was last seen bidding farewell to Hancock and Luffy as they boarded Momonga's ship and promising to help take care of their county in their stead.

(Source: One Piece Wikia)