Ewan Robert Mitchell is an English actor (born in Derby). He is known for his roles in the ITV period drama The Halcyon (2017), the medieval drama The Last Kingdom (2017-2022), the BBC World War II series World on Fire (2019-) and the HBO fantasy series House of the Dragon (2022-). Mitchell began his acting career in 2015, starring in the short films Stereotype and Fire. He later starred in the films Just Charlie (2017) by Rebekah Fortune, High Life by Claire Denis (2018) and the series Trigger Point (2022). In 2022, he was attached to star in the Amazon Prime Video original film by Emerald Fennell Saltburn. On television, Mitchell made his debut in the 2017 ITV period drama The Halcyon as Billy Taylor. He had his breakout role in the BBC Two and Netflix historical drama The Last Kingdom as Osferth, a role he would play from the second to fifth series. In 2019, he starred as Tom Bennett in the BBC One World War II drama World on Fire. In 2022, he appeared in the crime drama Trigger Point. Later that year, Mitchell began playing Prince Aemond Targaryen in the HBO fantasy series House of the Dragon, a Game of Thrones prequel and adaptation of George R. R. Martin's companion book Fire and Blood. His performance in the series has received critical acclaim.