Donald Sumpter is a British actor known for his long and versatile career spanning over six decades. He first came to prominence in the 1960s, appearing in classic series such as *Doctor Who*. On the big screen, he has appeared in notable films such as *The Constant Gardener* (2005) and *The Girl with the Dragon Tattoo* (2011). However, he is perhaps best known for his television roles. He portrayed the unforgettable Maester Luwin in the acclaimed HBO series *Game of Thrones* and had a significant role in the miniseries *Chernobyl*. His extensive filmography also includes appearances in *Being Human* and *Black Mirror*. For his work on *Game of Thrones*, he, along with the rest of the cast, received several Screen Actors Guild Award nominations for Outstanding Performance by an Ensemble in a Drama Series, consolidating his status as a respected and prolific character actor on the international stage.