The Princess of Hell and founder of the Hazbin Hotel. She believes every sinner can change and never gives up on the possibility of redemption. She always welcomes guests with a bright and kind attitude, striving to resolve conflicts through dialogue and understanding.

Charlie's partner and co-manager of the hotel. A reliable presence responsible for the hotel's order and safety. While wary of strangers, she protects her allies to the end once trust is established and always stays by Charlie's side.

A powerful Overlord known as the 'Radio Demon.' He always wears a smile and acts politely, but rarely reveals his true intentions. He enjoys interesting situations and surprises those around him with unpredictable behavior.

The first resident of the Hazbin Hotel. Skilled at brightening the mood with his playful and cheerful personality. Though he appears confident on the outside, he harbors loneliness within and values his friends more than anyone.

The hotel's bartender. He seems blunt and averse to bothersome tasks, but he ultimately helps his colleagues when they are in need. With his vast experience, he offers realistic advice and possesses a hidden warm heart.

The maid of the Hazbin Hotel. She loves cleaning and organizing, scurrying around the hotel with an energetic and bright demeanor.

Angel Dust's best friend. With an active and bold personality, she loves new adventures and fun. She acts without hesitation for her friends and shows a strong side that isn't easily intimidated even in a crisis.

A demon who loves inventing and a brilliant scientist. While living at the Hazbin Hotel, he gradually changes for the better, learning the value of being with friends as he seeks redemption.

The King of Hell and Charlie's father. Despite his immense power, he shows a playful and affectionate side in front of his daughter.

A genius demon who loves science and invention. He is always curious and dreaming up new experiments. He has a personality that gets so immersed in research that he forgets his surroundings.