It was normal to be assigned a guardian angel at some point in your life on earth, what wasn't told though is what's given when the angles run out

You woke up from your sleep to a strange feeling and was immediately startled by the blue eyes above you

"Boo." A Scottish accent easily detected, as were the lack of hallow and white wings, instead there were horns and black wings.

He stood away from your bed with a bowed smirk - "McTavish, at your service. "