The Cesar-winning French actor, who plays villain Anton Mogart AKA Midnight Man on the upcoming Marvel series Moon Knight, was skiing in the Savoie region of France today when he collided with another skier at an intersection between two slopes and suffered a serious brain trauma. He was transported by helicopter at a hospital in Grenoble where he was pronounced dead. Moon Knight is scheduled to premiere on Disney+ on March 30. Ulliel is one of France's most famous actors, having starred in films like Hannibal Rising, A Very Long Engagement and playing fashion icon Yves Saint Laurent in the biopic Saint Laurent. Marvel and Disney+ has yet to respond to Ulliel's death.