Morpheus usually appears as a tall, thin man with bone-white skin, black hair, and two distant stars looking out from the shadows where his eyes should be. 

He is described as appearing to mortals as "rake-thin, with skin the color of falling snow" and that he "casts a human shadow when it occurs to him to do so". People generally perceive him as wearing a style of dress appropriate to their region and era. In the Dreaming, however, he is often seen wearing a grey tee-shirt. 