I figure there's no escaping this now, so I might as well lean in and introduce the eventual RadioLaw fan kids.
Meet the twins, Rosemary and Armand.
Rosemary's more lavender coloring came in as she aged, initially she was almost Alastor's little clone. Her powers are music based, and of the twins, she's the only one that inherited any of Bree's aquatic traits. She's a siren, practically speaking.
She inherited her green eyes from Alastor's mother, and is named after her.
She's the older twin, and the meaner one, carrying the quiet ruthlessness and shrewd mind from both parents. She is absolutely a daddy's girl and that's contributed both to her style and her attitude.
Armand calls her little big.
She calls him big little.
If they're using each other's real names? RUN.
Armand's wings seem random, but he inherited them from Bree: her ears are actually shape-shifted bat's wings, a trait she finds embarrassing but is proud to see translated to something useful in her son. Outside of flight, he inherited Alastor's shadow powers, but uses them as a last resort. His size and strength tend to stop most issues before they start.
He's no slouch intellectually, but he's quiet and shy, awkward about his size in a hotel full of noodle people and string beans his mother keeps trying to feed and self conscious about how he stands out against the rest of his family. He inherited his frame and black hair from Bree's grandad William.
They grow up at the hotel, losing family because redemption keeps separating them, but because of looser reins on communication now, they still get to see their loved ones on occasion.
Alastor and Bree are careful with them. No one quite knows what will happen if they get hurt badly--human souls born in Hell are uncharted territory.