Friend of mine conviced me to make a Hazbin Hotel character, so I decided to take the concept of my pimp character Spinel and turn him in to a sinner demon.

As a human, he was in charge of a cabaret and bordello, having grown up in prostitution it was all he really knew and he learned to perfect it and climb on top. He's arrogant and very short tempered. He was killed by a rival who wanted to destroy and steal his business. He appeared in Hell as a unicorn because of the irony of what unicorns represent, purity and having an attraction to virgins, the gold filled cracks on his porcelain body showing his corruption, fragility, and weaknesses. He broke a leg in life and had a bad leg, and while it's better in Hell, there's still a reminder of it. The crack on his hips shows how he gave his body for power, and the crack on his face reminds him how he never liked his once very masculine face, and now an animal face that he finds even less beautiful. The fire on his tail represents his fiery rage, and when he gets pissed off the fire climbs up his back and lights up his mane. He is incredibly insecure about how tall he is, so as a demon he's practically freakishly tall, only being about a head shorter than Stolas.
He was in Hell before Valentino, dying in the earlier half of the 1900s, but was still attempting to climb back then. When Valentino took over with the porn industry, he quickly sided with him and became an underling, so that while Valentino may have power over him, he at least has a higher standing in Hell. Like many demons under Valentino's clutches, he has a crippling addiction to drugs and pleasure, which is taken advantage of to the fullest extent.
He's a handler for sex workers who were assigned to him and he comes up with designs for whatever kinky fashion they need to be presented in.