How did Iago make Othello a hateful character? Iago had always been a hateful character himself, stating that he “hate[s] the moor” at the beginning of the play. Iago’s plan was out of hate, his hate and jealousy of Othello caused him to turn Othello into a hateful person. First, Iago made Othello hate Cassio, telling Othello lies about Cassio and Desdemona. After the initial lies, Iago decides to step it up a notch by speaking with Cassio while Othello is hiding and listening. While listening, Othello’s hate for Cassio reaches new levels, “Now he tells how she plucked him to my chamber. Oh, I see that nose of yours, but not that dog I shall throw it to”. By the end of the play, Othello learns the truth of Iago’s plan, “Are there no stones