Krys Marshall. Actress: For All Mankind. Krys Marshall has wasted no time establishing herself as a promising young actress, gaining respect and accolades for her hard work on the stage and screen.She can currently be seen in the Apple TV+ series "For All Mankind" playing Danielle Poole, a NASA engineer and the agency's first African-American astronaut. "For All Mankind" explores an alternate history, where Russia's Moon landing precedes the United...