Bianca (Othello) confirms his wife's infidelity. This "evidence" completes Iago's manufactured case against Desdemona, and thereafter Othello is determined to murder both her and Cassio. In 5.1, Bianca arrives just after Cassio has been stabbed by Iago. She reacts with horror and concern. Iago, pretending to have just entered the scene, accuses Bianca of having been part of the group that attacked Cassio. Iago claims her emotional reaction is due to her being caught rather than concern for Cassio and gets her to admit that Cassio ate at her home earlier that evening. Both Iago and Emilia call her a prostitute, but
Emilia (Othello) comparatively minor character for much of the play; however, she serves to provide a strong contrast to the romantic and obedient Desdemona, demonstrating that she is both intelligent and distinctly cynical, especially on matters relating to men and marriage – her speech to Desdemona listing the faults and flaws of the male sex in 4.3 is a good example of this (though she does admit that women also have "frailty, as men have"). She also states in the same scene that she would be willing to commit adultery for a sufficiently high price – this shows her cynical and worldly