Why did the newly masqued figure draw attention?

Everyone at the party was appalled at what the masqued figure was wearing.  His clothes were "of the grave" and he was scarlet like the red death itself.  He looked like someone who had died of the red death and was walking among them to show disrespect.  He suddenly appeared at the strike of midnight, which created anxiety in most of the party goers.  Another reason he drew attention was because he did not listen to Prince Prospero.  His slow gait led the Prince through the 7 rooms to the final "room of death."  All eyes were on him for these reasons.