The king names none, because he would have the more impartial answer. And probably he knew nothing of the difference between Haman and Mordecai. Haman thought in his heart; as indeed he had great reason to presume, because he had not yet forfeited that favour which the king had showed to him above all others.
Related Commentaries of Esther 6:6
Esther 6:6
6 So Haman came in. And the king said unto him, What shall be done unto the man whom the kingb delighteth to honour? Now Haman thought in his heart, To whom would the king delight to do honour more than to myself?