Characters
(This will only contain characters that are currently in the published chapters of this book in order to not have any spoilers)

Raphael
Raphael is the Archangel of healing (The fourth major angel).
"He works to heal people's minds, spirits, and bodies so they can enjoy peace and good health to the fullest extent of God's will for them." (Learn Religions)
Patronage - the blind, travelers, happy meetings, nurses, physicians, medical workers, matchmakers, Christian marriage, and Catholic studies. He is also the special protector of sailors.
Appearance (human) - Dark brown skin. Long, braided black hair. Brown/black eyes. 6'3. Scars across body (shoulder blades). Very muscular body.
Appearance (angel) - Four wings, glowing extremely brightly, thousands of eyes, floating, very large, beautiful.

Asmodeus
Asmodeus is the Demon (Prince) of Lust.
He embodies the sin of lust for everything (sexual desires, power, food, wealth, etc).
"He has 72 legions of demons under his command. He is one of the Kings of Hell under Lucifer the emperor. He incites gambling, and is the overseer of all the gambling houses in the court of Hell. Some Catholic theologians compared him with Abaddon. Yet other authors considered Asmodeus a prince of revenge." (Malleus Maleficarum - Wikipedia)
Appearance (human) - Tan, freckled skin. Long blond hair. Emerald eyes. 5'9. Lean but slightly muscular. Generally just looks like some chill kinda dude, he dresses casual but usually wears tank tops with black jeans with chains and black boots.
Appearance (demon) - Breast of man, rooster legs, serpent tail, head of man (spits fire), head of sheep/ram, head of bull, wings/rides a lion with a dragon wings and neck.
Other names - Ezra Nosra Prince

Mammon
Mammon is the Demon (Prince) of Greed.
He is...greedy
Appearance (human) - Pale white skin. Short black hair with a slight purple tint. Black eyes. 6'3. Lean but slightly muscular. Looks like a rich CEO business man. Is never seen without a clean dark suit.
Appearance (demon) - idk man legs n stuff
Other names - A. (Aiden) B. (Bentley) Mammon