Each of the characters in the play "Othello" are each decieved in their own way whether it be the plotting of seeds, or the manipulation of emotions each of the characters vulnerbilities are tested by Iago's actions. One character that is constantly decieved and mislead by iago's words is Roderigo. Roderigos is a naive, young character that lets his love for Desdemona over rule all his thoughts and judgements. His downfall of being naively inlove allows Roderigo to be an easy target for Iago by manipulating him into believing that money could buy Desdemona's love. "Go to; farewell. Put money enough in your purse", and as naive as Roderigo is he replies by saying "I'll go sell all my land" allowing Roderigo to think that he is on his side using his vulnerabilities aginst him just to get what he wants.
Another character that is blind sided by Iago's deception is Cassio. A young polite character that respects woman and those whom are close to him. Iago states why he hates Cassio in his sililoque. Where he talks about why it is he hates Cassio, due to him getting the position he had wanted, because he was more qualifyed. He uses Cassio as part of his plan to take Othello down. Iago does this by using his weak spot against him so that he can get him close enough to Desdemona that Othello starts to feel vulnerable about his relationship with his wife. By doing this he takes something that is very important to Cassio, his reputation. This us what ultimately allows Iago's plan to work by doing this he enables the seedings of doubt to start growing.
Another character that is blind sided by Iago's deception is Cassio. A young polite character that respects women and those whom are close to him. Iago's hatred towards him getting the position he had wanted and worked hard for provokes Iago to decieve Cassio in anger. He uses Cassio as part of his plan to get him close enough to Desdemona that he can convince Othello that something is going on between them. By getting him drunk and persuading Cassio into thinking that Desdemona is the only person that can convince Othello into reinstating him, allowing Iago's evil plan to slowly unravel. This is shown when Iago says, "Confess yourself freely to her, importune her help to put you in your place again, She is of free, so kind, so apt, so blest a disposition, that she holds it a vice in her goodness not to do more than she is requested". Iago is only successful in doing this because of Cassio's downfall. His repuation his is downfall which allows Iago to manipulate his feelings but ultimately allows Iago to move onto the first seed plant.
The character that is mostly effected by Iago's deception is Othello. The change in this character is so significant that we are able to see a massive difference in not only the way Othello talks but how he acts as well. Iago's hatred towards Othello is clearly stated in the beginning of the play where Iago states "I hate the Moor" showing us what his true intentions are. It is because of Othello's insecurities and his lack of self-knowledge that allows Iago to manipulate and betray Othello so easily. After the plotting of his first seed "Ha! I like no that", the rest of Iago's plan is able to run smoothly. The change in Othello from a polite and noble character to an angry man fuelled with jealousy shows the readers just how successful iago was at decieving Othello as well as to how insecure Othello was about being an 'outsider'. The feeling of not deserving the position he has as well as a wife as good as Desdemona turns into his biggest flaw. Allowing Othello to believe that Desdemona was having an affair with his good friend Cassio. Iago plays the deceptor very well as hee knows Othello's vulnerabilities as well as knowing what they a re most insecure about. His knowledge of the other characters makes it easy for iago to be so successful at decieving. But it's iago's own downfall that allows his evil plans to overpower his mind and judgements.
Emilia and Desdemona are the two women who are stuck in between all the deception. But it is only Emilia that overpowers the mind player Iago, beating him at his own game. Desdemona on the other hand is the only character that remains the same even thoughout the play. Her devotion as a loving wife to stand by her man is evident till her devistating death. She ven blames herself for her own death, which shows that she believes she caused this even though she did nothing wrong.