Name:
Charlotte Linlin

Affiliation:
~!Whole Cake Island (current); Elbaf (former)!~

Position:
~!Captain (Big Mom Pirates); Yonko (one of the 4 emperors of the New World)!~

Devil Fruit:
~!Soru Soru no Mi (Soul-Soul Fruit)!~

Devil Fruit Type:
~!Paramecia!~

Bounty:
~!4,388,000,000 (previously; 50,000,000, 500,000,000)!~

Charlotte Linlin, also known as Big Mom, is the captain of the Big Mom Pirates.
~!She is part of the Yonko, the 4 emperors of the New World, alongside the late Whitebeard, Blackbeard, Kaido and Red-haired Shanks. The Yonko are part of the San Dai Seiryoku, the Three Great Powers. The other two great powers are the Marine Headquarters and the Shichibukai, the seven warlords of the sea.
She is the matriarch of the very large Charlotte Family, which makes up the infrastructure of her crew. She also rules over Totto Land as it's queen, seeking to form it into a utopia where all the world's races can live together in peace without experiencing discrimination or segregation.
Big Mom has 85 children consisting of 46 sons and 39 daughters. Her 43 husbands are scattered all around the world.!~
(Source: One Piece Wiki)