Harper adopted her almost at the same time as Sweet Potato (Devil Cake was so IMPOSSIBLE to handle Harper gave up and took his mom's advice, adopting another pup so he wouldn't go crazy). As a puppy she was quite energetic and curious yet amazingly troublesome. She was prone to being in trouble 11 times out of 10, hence her cute name. Despite this fact, she somehow grew up being the older responsible big sister figure for Sweet Potato.

Now that she's grown up, Devil Cake's quite extrovert but still being the voice of reason most of the time. She likes being groomed by Harper and Harper absolutely loves grooming her long, fluffy fur.

She was a little awkward at first around Valentine since she wasn't used to the idea of having a new family member. Despite this, she treated him as kindly and gently as possible since she understood the situation he was in before Harper brought him home.