Cosplay attendee in their costumes, as Grey Worm and Missande from the Game of Thrones.
Grey Worm is the chosen commander of the Unsullied, the warrior-eunuchs of Astapor whose reputation for combat is without equal.
He is released from slavery after Daenerys Targaryen buys all the Unsullied in the city and has them put all slave owners in Astapor to the sword and release all slaves. Once released, Grey Worm, like all his brethren, chooses to fight for Daenerys as a free man.
Daenerys, she finds his name and its associated practice– given to him by the Good Masters to remind him that he is vermin– distasteful, and tells him that he and all Unsullied may use their original names or chose new ones they like. Grey Worm agrees to disseminate the instructions to the other Unsullied, but chooses to keep his. He considers that his birth name was cursed as he had it when was taken as a slave, while "Grey Worm" is a lucky name as it was the one he had when Daenerys Stormborn set him free.
Missandei was originally a slave who served as an interpreter to the masters of Astapor, until she was freed when Daenerys Targaryen took the Unsullied army and used it to overthrow the slavers. Missandei now serves Daenerys as her trusted advisor and Handmaiden.
Cosplay, a contraction of the words costume play, is a performance art in which participants called cosplayers wear costumes and fashion accessories to represent a specific character.