Alwyn is the only child, and current heir to a noble family of high elves. The family in question initially acquired their power and position through a deal with demons, granting them the means to secure their fortune and influence.
Alwyn is the current heir of the noble line, and is the latest member of the family to take the demonic pact. It was through his attraction towards demonic blood, that he was drawn to Jinks, and became part of his story, and in time, his husband.
Alwyn practically worships Jinks, doting on him pretty much however he wishes. He is attempting, through his demonological research and magic, to help Jinks unlock his full potential as a lust demon. This often translates to him being filled to mountainous sizes by his husband's near-infinite output.
Due to this, Alwyn frequently undergoes massive, rapid pregnancies, in which he spawns several demon larvae, which return to the Abyss upon birth.