Aidan Gillen. Actor: Game of Thrones: Das Lied von Eis und Feuer. Aidan Gillen is an Irish actor. He is best known for portraying Petyr "Littlefinger" Baelish in the HBO series Game of Thrones: Das Lied von Eis und Feuer (2011), CIA operative Bill Wilson in The Dark Knight Rises (2012), Stuart Alan Jones in the Channel 4 series Queer as Folk (1999), John Boy in the RTÉ Television series...