Try this idea, a villain I made years ago for
GURPS: Villains but didn't get in in time.
Little Susy, The Happy Camper.
Susan was a neglected child of a wealthy family living on the shores of lake
Champlain ran off in a bid for attention from her parents (both of them spoiled brats grown tall). While climbing into a hiding spot in a tree, Susan fell and knocked herself out and drowned in the lake.
Susan's soul was bitter and it bound her to the Earth. Something ancient and cold in the dephts of Lake Champlain, something that was there before the great ice sheets ground the lake out of the land. Something that wanted to be amused.
Susan was spoken to by the cold thing, and she said yes.
Now there are
Summer Camps all around Lake Champlain. Susan was jealous of the kids who went to these camps. Those children had parents who cared enough to arrange a special treat for them. Even the poor children in charity camps had someone who cared enogh to send them to camp for the sake of their health and well-being. The Cold Thing sent Susan to camp.
Basically, Susan is a Wright, an animated corpse with the malevolent will of its deceased owner. Susan doesn't look like a wright, she looks like a petite sweetly pretty twelve-year-old girl. Susan has the strength of a linebacker (ST14) and the constitution to match. Add to that a century of practice at
Field Hockey has made Susan deadly with a club. But Susan's real weapon is the
Enthralment skills. Susan tells those nasty bloody fireside camp stories with such skill she hyptnotises people into thinking they are characters in her stories. This often leads to people murdering their closest friends.
Susan never had friends. So she enjoys ruining the lives of those that do.
The Cold Thing finds this so amusing.