Vala

A Meereenese prostitute is a character in the fifth season, appearing in "The Wars to Come". She was portrayed by Meena Rayann.

Background
She's a prostitute at Meereen.

Season 5
This prostitute is approached by White Rat, an Unsullied, who has been repeatedly frequenting her. White Rat pays her keeps her from disrobing and removing his trousers - as a eunuch his unable to have intercourse - instead having her lie behind him and caress him as she hums a melody to him. However, she's in league with the Sons of the Harpy and, as he's distracted, one of them enters the room and slits his throat. The prostitute and the murderer watch as White Rat quickly bleeds to death.

In the books
In the A Song of Ice and Fire novels, Stalwart Shield, White Rat's equivalent, repeatedly visits a brothel to have women lie with and hold him. There's is no mention if he has a preferred prostitute. Also, there is no indication any of the prostitutes were in league with the Sons of the Harpy and the attack in which he was killed.