Vashiel is Rumisiel's older brother. He goes to Tempest to help Rumisiel return to Heaven. His hair is grey.Cassiel calls him "prodigal son", but it's not clear why.
He introduces himself as "Vashiel of the second order of holy swords, divine punishment division". As part of his punishment for instigating the destuction of a city along with Xaphrael and Ramael, he is incapable of lying or concealing falsehood. Though he's an avenging angel, it's mostly symbolic.
Vashiel never had a girlfriend, despite girls finding him very attractive. He has become strongly attracted to Ash, which bothers him a lot.