“Game of Thrones” prequel “Place of the Dragon” has discovered more Targaryens.

The HBO arrangement has added three more central participants to its cast: Olivia Cooke, Emma D’Arcy and Matt Smith.

Cooke, known from Amazon’s “Sound of Metal,” is set to star as Alicent Hightower, the little girl of Hand of the King Otto Hightower who was brought up in the Red Keep, near the lord and his inward circle. Depicted as “the most attractive lady in the Seven Kingdoms,” Hightower has both “cultured effortlessness and a sharp political insight.”

Cooke has a few other forthcoming ventures scheduled for 2021, including highlight “Pixie” inverse Alec Baldwin and science fiction spine chiller “Little Fish” inverse Jack O’Connell. She additionally shows up in the current year’s “Bare Singularity” inverse John Boyega.

D’Arcy will star as Princess Rhaenyra Targaryen, the lord’s first-conceived, unadulterated Valyrian-blooded youngster who is a dragon rider. Some state Rhaenyra was “brought into the world with all the fixings… however, she was not brought into the world a man.” The auditorium entertainer’s stage credits incorporate “The Crucible” at The Yard Theater and “Against” at the Almeida Theater; on TV, D’Arcy has showed up in Amazon Prime’s “Truth Seekers” and “Hannah II” and BBC/Netflix’s “Craving for something new.” She as of late wrapped shooting on the element variation of “Mothering Sunday.”