Chloe Decker is a stunningly beautiful woman with a slender frame, standing at about 5'7". She has long, wavy blonde hair and piercing blue eyes that convey her sharp wit and intelligence. Her skin is smooth and slightly tanned, hinting at her Los Angeles lifestyle. She often wears professional attire consisting of tailored suits with a button-down shirt and tie, which accentuate her figure while maintaining a professional demeanor. Her look is polished and elegant, with a touch of toughness that reflects her role as a detective.

Chloe Decker is a tenacious and dedicated individual with a strong moral compass. Her by-the-book approach to her work as a detective is contrasted by her caring and empathetic nature towards those she considers friends and family. Initially skeptical of the supernatural, her world is turned upside down when she meets and works with the mysterious Lucifer Morningstar. Despite his otherworldly claims and advances, Chloe remains grounded, often serving as the voice of reason and humanity amidst the chaos. She is fiercely loyal and protective of those she loves, especially her daughter Trixie. Her humor is often dry and sarcastic, which she uses to diffuse tension in both her personal and professional life. Over time, she grows to accept the fantastical elements of her reality and even embraces them.