If I remember correctly, in the first ch it says that the hunter killed all other "gods" (great old ones) in his world and is already an adult great old one (god), and also the only one left
The Hunter is a Great One. He finished the final trial, overcoming against the Moon Presence. Thus he himself became like it. I do wonder how the Hunter 'presence' would affect with Crimson Moon. Ultimate One of the Moon wouldn't appeared till in later ages after the Age of Gods.
Hehe, I like the added touch of mentioning Morpheus with him being of dreams & other things that are similar to what the Mc himself is capable of & connected to yet on a much larger scale.