Iago is a manipulative and vengeful antagonist. Explain this statement referring to Roderigo, Cassio, Othello and Emilia.

Roderigo: Iago knows that Roderigo is a hopeless sap. His unrequited love for Desdemona will never be returned no matter what situation Iago can conjure up. Iagojust knows that he can use Roderigo as a means to get Cassio in trouble and finally ruin Othello. Iago prays on Roderigo’s obsessional love to get what he wants.

Please submit each character one at a time. Thanks.