Kevin McKidd addresses Harry Potter casting speculation Kevin McKidd hopes he can land a role in Harry Potter following his departure from Grey's Anatomy. 10 May 2026 Kevin McKidd is "very excited" at the prospect of starring in the Harry Potter TV series. Kevin McKidd hopes to land a role in Harry Potter The 52-year-old actor recently left Grey's Anatomy after 18 seasons playing Dr. Owen Hunt, and it has recently been speculated his next project will be playing Arthur Weasley in HBO's upcoming adaptation of J.K. Rowling's best-selling book series.