Israfel is a Cassisian Angel, and cohort of Artemis Soulsworn. His resemblance is typical of his kind, appearing as a flying golden helm with wings. He also has a large scar that appears as a welded line up the right side of the helm.
Israfel is almost always in Artemis's presence, though not always at his side. He speaks up mostly to offer guidance on an issue. Artemis also consults Israfel in order to use Israfel's Commune spell, in which he speaks with an unknown deity.
When Ronan killed/captured The Lady of the Lake, Israfel felt as though he had lost all connection to his deity. It is likely that if Israfel attempts to Commune with his deity, he will be redirected to Ronan.