unexpected guest at halloween

“Eye of newt, and toe of frog,
Wool of bat, and tongue of dog,
Adder’s fork, and blind-worm’s sting,
Lizard’s leg, and owlet’s wing,—
For a charm of powerful trouble,
Like a hell-broth boil and bubble.
Double, double toil and trouble;
Fire burn, and caldron bubble.”
― William Shakespeare

“While adding to and modifying this …Landscape with Fruits and Vegetables in the foreground by Abraham Bloom 1600-1651 … when finished I noticed one guest at the party I had not brought forth. Can you spot it?”- MYMM