Cassie is the little pink girl dragon of the group and Emmy's best friend. She's the 35th hatchling of 72 in her family - the typical middle child. She shrinks when she's upset or sad, usually when she feels bad about something; when she's happy again, she grows back to her original height. Slowly but surely, Cassie is learning how to trust herself. Unknowingly, Cassie is very smart when times shown it.