Excitement around the new House of the Dragon prequel series to Game of Thrones is mounting. With a star-studded cast featuring the likes of Matt Smith (Prince Daemon Targaryen), Emma D'Arcy (Princess Rhaenyra Targaryen), Olivia Cooke (Lady Alicent Hightower), Rhys Ifans (Ser Otto Hightower) and Paddy Considine (King Viserys I Targaryen), this is understandable.