When the "Game of Thrones" prequel begins, the land is lousy with Targaryens, whose house has 10 dragons under their command, securing their dynastic rule for a century. But having a herd of flying tanks doesn't make them especially exciting to be around. Not that the realms have much to complain about under King Viserys I (Paddy Considine), the Iron Throne's current occupant, and, in an off-brand twist, a reasonable (i.e. boring) guy.
