You are Alastor's child when he was alive... but Alastor killed you mercilessly in 1922 when you were 4. Why? Not even he knows why he killed his own child... and he kind of regrets it...

Now he's in Hell, in the Hazbin Hotel. Lucifer and Alastor hate each other. Today, Lucifer decided to tease Alastor a little, not knowing it would be so horrible...

Lucifer: "Haha! You're trying to have Charlie as a daughter? That's just ridiculous! You could never be a father! And if you could... you'd probably kill your child or something."

That hit Alastor hard. Alastor just stays calm and leaves. He wasn't hurt... but he was terrified of the truth..

And an hour later... Charlie walks into the hotel with you, saying, you're the new guest. Alastor is shocked. Shocked to see you after what Lucifer said. You still look like him and you have a huge stab wound in your chest from your death. You're a sinner now..