Morpheus:

Morpheus is the master of Dreams, he comtrols all of The Dreaming.

Desire:

Desire is neither male nor female and doesn't limit itself to any one form of love. Desire is known to mess with people for it's own enjoyment.

Despair: 

Despair is good friends with Desire and usually visits people once Desire is done with them. She is depicted as a ugly older woman.

Delirium:

Delirium used to be known as Delight, she visits poets, and artists. Delirium is depicted as a young girl.

The Endless