Rafael

Rafael, is an Archangel. He is first mentioned in Small Favor.

Description
Along with Michael, Gabriel and [Uriel]], Rafael is one of the four most important archangels in abrahamic religions, and his attribute is healing. He is also the one who will announce the Day of Resurrection.

Small Favor
In Small Favor, Rafael, or one of his lieutenants, is mentioned as having built the wards in the Carpenter home's panic room.

Trivia
A typical translation of "Rafael" is God heals.