Justification One player is the King, one player is the servant. You may wish to time the Servants to see how long they last. This game teaches how to be a good servant. You assume most people will put up with you, but being a servant is an acquired skill. If you can keep the King involved, then you can keep the audience involved as well.
Kings sometimes kill for no reason, but the game is still worthwhile.
One player adopts a character based on someone with a memorable personality. Answer questions about your life as that character. The questions should be the kind you ask a new acquaintance whom you are trying to get to know. Age, hobbies, career. You can develop a well-defined character and keep it on file for future use.