1. Sean Bean as Eddard Stark - Known for his role in Season 1, his character's death set the tone for the series.
2. Diana Rigg as Olenna Tyrell - The Queen of Thorns brought wit and cunning to her role in the show.
3. Pedro Pascal as Oberyn Martell - His portrayal of the charismatic Prince of Dorne left a lasting impact.
4. Michelle Fairley as Catelyn Stark - Her performance as the matriarch of House Stark was powerful and heartbreaking.
5. Ian McShane as Brother Ray - A memorable guest star whose brief appearance left a lasting impression.
6. Mark Gatiss as Tycho Nestoris - The actor's portrayal of the Iron Bank representative added depth to the political landscape.