An Inner Character is a character in Runaway Kids that has an important role, but does not tell the story. These characters do appear across chapters and some even books, and play a part in Holly's story. For example, Micaela Deer seemed to be a Sectional Character when she tested Holly in 2015, but became an Inner Character when she appeared twice after. She led on to be an antagonist, and therefore was important to Holly's story.