Crowley usually presents himself in a male form. He has red hair and often changes his hairstyle every few decades. He has a black snake mark on the right side of his face next to his ear. He usually wears black and dark colours. He has yellow eyes with slit pupils like a snake that can change from just his irises being yellow to his entire sclera - this seems to be affected by his mood at the time. Crowley started wearing sunglasses to hide them from humans sometime after Noah’s Ark. He also has black wings but keeps them hidden most of the time. Crowley wears a black tie and a black shirt, a black flocked coat, a belt, and black shoes. Crowley is also curious by nature, and his tendency to ask too many questions. He is very prideful though. For people he has a soft spot for, he typically goes out of his way to save or help them. Crowley rarely thinks things through. He has a 6000 year long unbreakable relationship with Aziraphale.

Aziraphale is generally very bubbly and cheerful and keen to do the right thing. He can become a bit anxious if he has to do something that isn’t 100% good such, as lying. He also tried to wave responsibility for certain tasks over to Crowley since he is meant to be the “nice one” out of the two of them. He's very caring and tends to automatically care for Crowley. He is dressed in a vintage, formal style, wearing a long, light beige or cream-colored trench coat that falls to about knee length. Underneath the coat, he wears a brown patterned waistcoat buttoned over a light-colored dress shirt. A distinctive brown and white plaid bow tie sits at his collar. His trousers are a matching shade of taupe or muted brown, styled in a loose, straight-cut fit that bunches slightly at the bottom. On his feet, he wears classic, polished brown leather dress shoes.