Karl Sanchez (born 14 March 1991), known by the stage name Nicky Doll, is a French drag queen, television personality, and musician based in New York City.

Sanchez co-created, co-wrote, and stars in Les Voyages de Nicky, a documentary that explores gender expression, the art of drag, and LGBT activism in different countries.

She successfully lip-synced "for her life" against Dahlia Sin in episode 3, to Problem by Ariana Grande featuring Iggy Azalea.

[14] In addition to hosting the show, Nicky Doll has headlined the Drag Race France Live tour after the airing of each season, with performances in most major French cities as well as a few stops in Belgium and Switzerland.

[20] On July 26, 2024, Nicky Doll was a part of the fashion runway and dance (Festivité) segment for the televised opening ceremony of the 2024 Summer Olympics and performed her newly released single, "I had a dream".

Sanchez commented "I’m about to sue you again for defamation – the same exact topic that you were sued on and lost," in reference to a case won by Canadian-British drag performer Crystal against Fox for similar remarks.