Grey Worm

Grey Worm is a character who will debut in the third season. He will be played by Jacob Anderson.

Grey Worm is a member of the Unsullied, the warrior-eunuchs of Astapor whose reputation for combat is without equal.

In the books
In the Song of Ice and Fire novels, Grey Worm is a stalwart and skilled warrior. Like all Unsullied, he has never had a real name, instead choosing a name every day by lottery from a barrel.