Comparison of Macbeth and Jack (of Lord of the Flies) Macbeth is one of the protagonist in a Shakespeare play "Macbeth". Jack is also a protagonist in the novel "Lord of the Flies". The following essay will outline the differences and similarities of these two characters. There are five similarities between Jack and Macbeth. Firstly, they were both leader of some kind. Jack was a leader of a choir group while Macbeth was a co-leader of Duncan's army. Secondly, they were brave. Jack was brave, he went up to the top of the hill by himself and searched for the beast.