Charlotte Linlin

Big Mom (ビッグ・マム Biggu Mamu) is the last Yonkou to be named. She is presumably the mother of Lola, female pirate who is the captain of the Rolling Pirates. In Thriller Bark Arc, Lola gave Nami a Vivre Card of her mother telling it could help them on their journey ahead. Lola also told her mother is a well known figure & fearsome pirate in the new world.

Appearance
Big Mom has not shown him/herself thus far, but his/her silhouette is visible in Garp's explanation of the Yonkou.

Abilities and Powers
As one of the Yonkou he/she is one of the most powerful pirates of the One Piece world.