According to the Moon Knight trailer, Hawke, who you may recognise from movies like The Purge, The Magnificent Seven, and Cut Throat City, will appear on the show as a cult leader who encourages Steven to "embrace the chaos" within him. While his character's name isn't said on screen, the trailer's closed captions reveal he'll be playing Arthur Harrow, a doctor and scientist from the Moon Knight comics who only appears in a single issue, Moon Knight: Fist of Khonshu No. 2.
Image Source: Getty/ Dimitrios Kambouris