Elsie is one of the tritagonists of the 2001 series Stanley. She is the only female of Stanley Griff's pets. Elsie is a yellow cat with brown stripes, a long tail, and white paws. In every episode, she and her fellow pet Harry always sing the Great Big Book of Everything theme song whenever anyone talks about it or even has it, no matter where they are and no matter whether pets are permitted in a certain area or not. Elsie is voiced by Hynden Walch, who also voiced Starfire, Alice, Wendy and Princess Bubblegum.