Thesis: Throughout the story of Othello, Iago has been a two-faced character, in which he influences the other characters' ethical judgments.
by Ananya Ananth

1. Iago - Iago is a character, in which he is depicted as "two-faced." In act 1, scene 2, line 33, he swears by Janus, the god of doorways and beginnings. Janus is also seen as a "two-faced" god.
2. Iago manipulates multiple characters at a time, which allows him to change the judgments of some people, all while being perceived as an honest bystander.
2.1. Throughout act 2, scene 3, Iago chats with Cassio about Desdemona, as a friend. He even suggests that Othello doesn't deserve her because he is black. Later on in the scene however, Iago exposes to Othello, that Cassio has been "getting closer" to Desdemona.
3. Iago has been loyal and kind to Othello since the beginning of the story. Due to this, Iago was seen as a trustworthy" source.
3.1. In act 3, scene 3, line 479, Othello upgrades Iago to be his lieutenant. This shows that Iago can manipulate Othello into getting what he wants.
3.2. Iago is not only trusted by Othello, but by Cassio and Desdemona as well.
3.2.1. In act 3, scene 3, line 5, Desdemona addresses Iago as "an honest fellow." This means that Desdemona doesn't suspect Iago with any type of foul play.