Big fan of The Horrors who are doting or very protective parents.
🌿 The village sacrifices outcasts to an infamous woodland spirit to appease her, not knowing she takes those abandoned souls under her wings (maybe figurative, maybe literal). She brings them back to her secluded home, now a small commune, and maybe she even grants them a bit of forest magic of their own. She's ageless, so young children, adults, and the elderly alike are all her children in her eyes.
🐙 Cluster of eldritch tentacles and eyes carefully cradling the most fragile being they've seen in their eons (Greg from accounting, 35), purring(?) in contentment, or showing it off to their eldritch friends while they're all shaking in barely-restrained cuteness aggression.
🦇 The cruel vampire that doesn't blink at draining dry the town neighbouring their castle and terrorizing hundreds, but coddles their young fledglings and holds their hand through discovering their own vampirism. Bat-flight lessons very gently directed like learning to ride a bike without training wheels.
👻 The malevolent ghost attached to the stuffed toy of an oblivious baby/toddler/regressor who thinks the big floaty guy who throws furniture at their tormented friends and family is hilarious.
🤡 A terrifying monster with a grin of 3-dozen razor sharp teeth that wears a cardigan and cute circular glasses with a chain to the daycare drop-off line, or while bringing their new human pet/child/friend off at work, but isn't afraid to flash those teeth in a wide grin when they catch sight of the school bully or the office Karen. They revel in causing the nightmares that will haunt a wrong-doer into their 80's.
🐉 The dragon deciding a town or specific people are a part of his hoard. Violently protective of them, makes sure their town is safe, comfortable and maintained, but refuses to let them leave because the wide world is too dangerous. His favourite knight!? How could he ever let them go out there!? Do you know how many wizards are out there just waiting to turn them into a toad!?
The Creepypasta and FNAF fandoms have this on lock for agere stuff. I love love love when some ageless being or horror monster is like "aww! you're so cute! you're my baby and I'll eviscerate anything that dares touch a hair on your head :)"