Hypnos is the embodiment of sleep. He is one of Nyx's many children, and the younger twin brother of Thanatos. He watches over the procession of newly-arrived shades coming before Hades, checking their names off his list. He is often seen sleeping on the job. He is the physical embodiment of sleep and is much more powerful than he appears, as he can put the entire House to sleep. Despite being lazy he is usually quite chatty. Hypnos flaunts a lazy expression and sports curly hair.