Hypnos is the young god of sleep and son of Nyx and Erebus. His mother deeply cared about him but seems to treat him somewhat like a servant but also a son as he usually takes care of a lot of things for Nyx like putting away Nyx’s chariot when she gets home or closing the doors behind her. His relationship with his father is unknown but it can be presumed Erebus treats him a similar way. Hypnos is also presumably the oldest sibling and he puts all of his siblings to bed before Nyx returns home.