Joseph Jason Namakaeha Momoa (born August 1, 1979) is a Kānaka-American actor, model, and producer. He is known for his television roles as Ronon Dex on the military science fiction television series Stargate Atlantis (2004–2009), Khal Drogo in the HBO fantasy television series Game of Thrones (2011–2012), and Declan Harp in the Netflix series Frontier (2016–present). He is also known in the DC Extended Universe as the character Aquaman.