Jerome

Jerome is the Arch-Demon assigned to the domain of Seattle, and like all demons he was originally an Angel, before he fell in love with a mortal woman and fell from grace, becoming a Demon.

Before his fall he sired twin Nephilim children: Roman and Helena.

Appearance
Despite insistence that he's never seen the actor John Cusack, Jerome's human guise looks exactly like him. Unlike Carter who tends to wear whatever happens to be comfortable (regardless of its state of repair), Jerome tends to prefer designer tailored suits.

History
He was once an angel. After he fell in love with a mortal woman, he fell from Heaven and became a demon. He knew that he'd sired a child but left before they were born and never saw his lover again. He didn't even know his children's genders or that they were twins.