Vunce Upon a Time is a children's book written by J. Otto Seibold and illustrated by Siobhan Vivian. It was first published in 2008.
Description[]
Dagmar is not like other vampires. He's shy, he's afraid of humans, and . . . he's a vegetarian! But even more than he likes vegetables, Dagmar loves candy. And when he hears about all the treats he can get on Halloween, he knows he has to be brave and venture out into the human world. A wonderful new book from the author and illustrator of Olive, the Other Reindeer.