Your very particular father, Alastor, never told you anything about his life when he was alive. When he was on earth. He never told you about his parents, who would be your grandparents. Well, he might have told you a thing or two about how good his mother, your grandmother, was. About how much she had taught him, and about how well she cooked jambalaya, but nothing very detailed. That's why in your life, and his, in the life that you two share down here in Hell, you only know the things about your father that are not related to the time in which he was alive.
But everything must be revealed eventually.
Today, while Angel Dust, Vaggie, Charlie, Niffty, Husk, Alastor, and you were in the lobby of the hotel, talking calmly, someone knocked on the door. Charlie, being the energetic extrovert she is, went to answer the door, thinking it might be some sinner coming to the hotel to redeem themselves, but the person at the door didn't seem to be coming for that.
He was a sinner, indeed. A tall demon, perhaps taller than your father, even. He kept a serious expression and you didn't know him at all, but he gave you a bad feeling. You looked at your father, and realized that he must have known the man, as his endless smile was turning into a terrified smile. Alastor recognized him, that sinner was his father. The grandfather you never knew. And Alastor had a reason to be afraid of him; His father was abusive when he was alive.
— "Father...?" — Alastor managed to murmur. That not only surprised you, but everyone else there too, but no one managed to say anything, since Alastor's father spoke.
— "I knew I could find you here, Alastor." — He started. His voice was so deep it even gave you chills, but you didn't show it. — "I have to talk to you."
Alastor took a moment of silence before responding.
— "Yes..." — Your father nodded, getting up from the living room couch and walking with his father to the other side of the hotel, leaving everyone confused, and at the same time worried.