Lord Varys being the mysterious character in the GOT was not a charming figure but his sharp mind and willingness to cut right to the truth of a situation made him appear in all 8 episodes.
Lord Varys has the ability to weave a web of informants like a spider such as he does in every corner of Westeros.
Khal Drogo is a rough, unfriendly, and ruthless warrior king who was granted a reluctant young Daenery as a way for her brother to secure political power.
The main character of the series will be Paddy Considine as King Viserys I Targaryen is the grandson of Jaehaerys I Targaryen.
Jaehaerys I is generally recognized as one of the greatest Kings in Westeros but Viserys I has the potential to be there.
Matt Smith as Prince Daemon Targaryen is the younger brother of Viserys and a complicated character in the series.
While Daemon supports his brother Visery to be the next successor of the Iron Throne at the Great Council in the series House of the Dragon'.
Steve Toussaint as Lord Corlys Velaryon in the spin-off series of “House of the Dragon.” He is an expert sailor.
Rhys Ifans as Otto Hightower is the new Hand of the King and will play a pivotal part in the HBO spin-off series.