One of the smaller, yet important, characters is King Duncan. Duncan is an intelligent, generous, trusting and simply, a good king. Especially his goodness contributed to the doubt of Macbeth to actually kill the king. Complimenting his companions for all their nobleness demonstrates Duncan's love to the people around him and effects their compassion for him.
"O valiant cousin! Worthy gentlemen!" (Act I, Scene 2) is Duncan's response to someone he barely knows and just explains what had happened during the battle and how Macbeth saved Duncan's kingdom. Of course it is logical that Duncan…