Four Brown Bears, each wearing a peaked cap and coats with brass buttons were trundling trolleys of food. - Mary Poppins
Mary Poppins was in the air now, floating away over the cherry trees and the roofs of the houses, holding tightly to the umbrella with one hand and to the carpet bag with the other.
The merry-go-round was just slowing down and as they approached it, they leapt upon it, Mary Poppins on a black horse and Bert, the Match Man on a grey horse.
Mr Philpot's Mushroom #theimaginedbookcover
The Nixie of the Mill pond - at the point where the lovers turn info a toad and a frog to escape the nixie's wrath.
According to which version you read, the ghouls / vampires / witches / lamias in HCA’s Wild Swans.
Jorinder and Jorindel - the evil-fairy can't stop turning young studs into statues, young maidens into birds and herself into an owl. Girl's got issues.
Little Red Riding Hoodie

A made up story - one creature with mal-intent, another with guile, two without.