Answer:
Othello is very angry and envious because he believes that Cassio and Desdemona are having an affair. He is jealous.
He wants to see the reality of what has become of the affair. He becomes beast like and has fits that make it where he cannot even speak where others can understand him. The green eyed monster of jealousy got him good. He spreads this jealousy to other characters. He wants to be able to manipulate people.
Step-by-step explanation:
Lago is a villain and he is manipulative. He is a smooth talker.