This passage by Iago shows his true colors as a character (Act 1 Scene 1).

“Call up her father” “Rouse him, make after him, poison his delight” “Proclaim him in the streets; incense her kinsmen” “And, though he in a fertile climate dwell” “Plague him with flies. Though that his joy be joy”  “As it may lose some color.”

He is sneaky and intends to cause problems for the family already by calling upon the father to inform him of his daughters doings. He is a servant to Othello but he shows no respect for him and his attitude towards him are extremely negative. He is already developing his ideas on what to do to destroy Desdemona’s relationship with her father by destroying his pride in her and eventually he moves onto her relationship with Othello. He clearly has no problem in involving himself in family affairs. This behavior continues throughout the play, the reader sees him constantly manipulating others to get the best outcome for himself. The reader should also be able to tell that he is going to be very dramatic about his plans of malice. He is aiming to hurt others and only cares for himself. This shows the kind of character Iago truly is!