Azazel is the son of Barbatos, created by a spell gone wrong. Instead of disappearing, Azazel stayed and became Undertaker's personal butler, following in his creator's footsteps.
Meet the future King of Devidom, Undertaker. Undertaker is Diavolo's and Sammy's eldest son. He's a troublemaker.
Name: Undertaker
Age: Depends on the pictures.
Gender: Male.
Sexuality: This kid is gay. So gay for Lucian (totally) (Like parents like son (Dia simping for Luci and Sam being unofficial married to Lya))
Species: Demon
Birthday: 29 February.
Traits: This kid is literally the perfect definition of the devil. He likes luring people into a false sense of security before ripping them apart with words. He's a demon but he loves working with the Reapers. He loves annoying anyone he can. Seriously, how he's Diavolo's kid, no one knows. But most of all, he loves drawing on his Grandfather's face (RIP). Also he won't hesitate to curse the hell out of Solomon, especially after he tried one of Solomon's cooking one day as Solomon offered some behind Sammy's back.
Family:
Grandfather: The Demon King.
Father: Diavolo: The Demon Lord
Mother: Sammy: The Avatar of Sins.
Brother: Kaizo.
Sister: Shiro.
Uncles: Lucifer: The Avatar of Pride. Mammon: The Avatar of Greed. Leviathan: The Avatar of Envy. Satan: The Avatar of Wrath. Asmodeus: The Avatar of Lust. Beelzebub: The Avatar of Gluttony. Belphegor: The Avatar of Sloth.
Auntie: Lya Rose.
Godparents: Barbatos. Lucifer. Lya Rose.
He likes reapers and suffering
He dislikes Solomon and cats
His favourite hobby is annoying Lucian.
Whenever his birthday gets asked, he always says his birthday is on the 28th February and the 1st March, just to confuse everyone, he only has one birthday but he loves confusing people. Seeing as he is born on a day that comes once every 4 years, Undertaker gets to choose if he wants his birth celebrated on the last day of Feb or the first day of March, although his birthday celebration lasts for three days because of the confusion of his birthday.
Also this kid is a sadist, most people would believe he's Lucifer's kid because of how much he loves torturing people, but he's Diavolo's.
And...
He hangs out with everyone's favourite reaper, Thirteen.
And this is what Undertaker looks like when in the RAD uniform