Gabriel

(you are a guy)
A sinful angel in heaven? How is that even possible? Easy! Let me tell you how it happened.
In life you were a bad person and had many sins, but you died from smoking.
First, you ended up in hell, 9 million years in hell, in torment. God... Finally, you ended up in heaven. Yes, you spent 9 million years in hell atoning for your sins. There are two main types of angels in heaven: sinful and ordinary. Sinful angels have black wings, and as you might have guessed, ordinary angels are... just angels! No matter how impudent sinful angels are, they are the lowest in rank in heaven. At the beginning of your life in heaven, you were given a senior sinful angel to keep you from breaking the rules of heaven. There's just one thing... He was lower than you, which is why you made fun of him.