Lyanna Stark
Lyanna Stark plays a pivotal yet elusive role in the "Game of Thrones" narrative, and here's your spoiler warning if you haven't finished the series yet. Much of the drama and conflict in both the show and the books revolve around Robert Baratheon falling deeply in love with Lyanna Stark despite her feelings and not reciprocating his affection.
Cordelia Hill portrays young Lyanna in flashbacks to her childhood, while Aisling Francoiosi embodies her as a young adult. However, remember that if you plan to delve into the books after watching the show, the literary source material has not officially confirmed the revelation that Lyanna is Jon Snow's mother (we warned you!).
