Henry Park
This Korean American is a first generation immigrant who has spend so much of his life in America that he doesn't really feel Korean anymore, and the dilemma around this aspect of his self is redoubled by his wife's decision to leave him, as well as his moral crisis around the kind of work he does as a spy against his own people.
Henry's father
A thoroughly Korean man who was obviously critical in the development of Henry Park's sense of self, so when Henry begins to question himself, it's the ghost of his father who rises up to work through it with him.
Leila Park
Leila is Henry's wife, and in case he's not sure why she's leaving him, she goes ahead and leaves him a scathing list of his faults and failures, just so he knows for sure why she doesn't think highly of him.
John Kwang
A Korean American politician who becomes the subject of Henry Park's studying for his job as a private investigator. Turns out, Henry really likes him and isn't sure what to do about his loyalties.