The specialization given to Raphael was that of travelers and sailors, the blind, medical workers, marriage, and studies of God. He was tasked with ensuring the angels in the lower choirs protected these specific mortals and their endeavors from the influence of demons, and later, the Fallen. This second point has never concerned him much except when the Fallen attempt to correct religious misconceptions about God, the angels, and the big picture of the universe.
When he wishes to disclose who he is to mortals, he appears dressed in the clothes of a courtier and carrying a staff, as these are the most common symbols associated with him in popular religious artwork. He presents himself with wings only approximately half the time.
Raphael almost exclusively presents himself as male.
Raphael doesn't have any preferences for the gender of his various lovers.
Morality & Philosophy
Raphael, like most of his Archangel brethren, have chosen to mostly ignore the Fallen, despite having orders from God to disrupt their activities at every turn. He is well aware that the Fallen care deeply for the mortals they Fell to protect, and therefore allows them to do what they wish most of the time. They make his job easier, after all, and he has too few Blessed angels under his authority now to do much about them. The only time he comes into conflict with the Fallen is when they attempt to turn religious people away from organized religion by teaching them the truths of the universe.
Like most Blessed angels, Raphael does his duty guiding what lower angels he has left so that he can remain on God's good side. He does not wish to become one of the Fallen.