Hypnos
Ὕπνος · Roman 솜누스 (Somnus)
The god who can put anyone to sleep. He once put Zeus under.
Son of Nyx, goddess of night, and twin of Thanatos.
At Hera's request he lulled Zeus to sleep — and in that interval, the tide of the Trojan War turned.
His son Morpheus appears in dreams wearing human form.
SourcesHesiod, Theogony