Once a throne angel of high standing who chose to fall with Lucifer and in return was made a Duke of Hell. He rules over a region of Hell and had a multitude of legions, spouses, and children. However in an effort to spread to work of Lucifer and his own power and control, Crow has been orginizing an attempt to break through to the mortal plane through a weak point. After numerous of failed summonings and possessions, he finally possessed one Isaac Kelly.     

However due to the interference in the summoning process from Isaac unknowingly changing it, their souls become tied together and Isaac manages to keep his awareness and individuality. Crow sharing his new vessel with an annoying charlatan wasn't part of his plan, but he's making it work. While Isaac typically controls his own body, Crow can easily become a puppet master, pulling his strings.     

Crow has a special kind of tension with the shamed angel Samael, who absolutely despies Crow and often attempted to send him back to Hell in pieces. They're bitter exes. Crow has a special interest in Ezra, desperately wanting to consume his strange, powerful soul.