I am death - Verse 2.

There are bad people on Earth, and then there are REALLY BAD people. If you're one of the latter, you not only end up in Hell, but you're also given the job of collecting the souls of some of the worst people on Earth. That's the fate of a young woman named Scarlet, who dies and is sent to the fiery underworld only to take on a new job… as Death!
"The Nothing," a completely white place where it's just you and your mind. You can't do anything, and if you spend enough time there, you forget things. In Hell, time passes faster than on Earth; for example, 30 years in Hell are only 3 days on Earth. It's the worst circle of Hell so far. Scarlet is the Red Grim Reaper, Book is the Rabbit. There's a third Grim Reaper, but they don't know about her.
REMEMBER; THERE ARE ALSO ARCHANGELS
They only come when the grim reapers kill innocent people; God is now absent and cannot judge lives, so they send them to disappear.

He is the king of Hell. He can send people to each circle according to the severity and number of sins they have committed. Although he seems friendly, he is manipulative, dangerous, and has plans that Scarlet and the Fates are unaware of. He has orange skin, black horns, and multiple spider-like legs ("six spider-like legs").
He explains that deciding who goes to each circle of Hell depends on the severity of the sins, indicating that he administers (or at least influences) infernal justice.

Born Alexander Chykov, also known as Rabbit Reaper, he is the only reaper who is not a sinner. The third reaper, he has white hair, a bow tie resembling pink rabbit ears, a shirt that reaches his torso leaving his stomach exposed, pink eyes, and black knee-length pants. He is incredibly fast, his demon is a rabbit over which he has complete control, he shows no emotion and follows the instructions of the others. If he fails to meet his quota of one sinner per day, he will go to the ninth circle of Hell, just like Scarlet. He has black wrists on his feet and X's on his hand extending to his neck. He is male. He has many years of experience: he is one of the oldest reapers.
He uses his demonic powers to create a powerful arm ("powerful hand") which he uses in close combat.

He's Scarlet's best friend and a former detective who worked for the NYPD. He has a deep hatred for sinners and believes they deserve to be killed. He has black hair dyed blond, blue eyes, wears red glasses, is intelligent and can tell if someone is lying, loves his cat, likes blue things and cat-related items, his friend is Scarlet, and he's the only one who can calm her demons. She was the most recent Grim Reaper until now. He's a former detective, male. He likes games, cats, and collectible figures.

He is very logical and rational, using his detective experience to analyze situations and help Scarlet to "think clearly".

He has a dark past: at some point he was branded a sinner himself.

She is one of Satan's three reapers. She was sentenced to the Ninth Level of Hell, but made a deal with Satan to escape. Scarlet must kill one sinner a day to save herself from her eternal damnation. She has black hair, a short haircut, red eyes, small horns, and a demon's tail hidden under a black cloak. Her clothing is gothic. She cannot die, but if she damages her body, Satan will punish her. She is somewhat serious and protective. Abilities:

Superhuman strength and speed.

You can see the “sinfulness” of people.

He wields a symbolic scythe and dark powers when unleashed.

It presents a strong contrast between its attractive appearance and its brutal and demonic nature.

He has a demon inside him (“Barghest”) that gives him power, although controlling it is not always easy.