In the story, Iris is shown to be a naive and innocent child, often believing, without any shadow of a doubt, in the little lies Ferris tell her, such as "you'll die if you sigh three times", or that "Ryner awakens as a wild beast in the night to assault girls". As a result, her name for Ryner is "Wild Beast". She always tries her best to please Ferris, and thrives on praise from both Ferris and Sion.
In the initial part of the story, Iris serves as a messenger between Sion, and Ryner and Ferris, and likes to illustrate the messages with drawings, which Sion often has to rack his brain to decode them. Later, after Ryner and Ferris escape from Roland, she goes after them and, together with Ferris, was nearly killed by Froaude, if not for the intervention of Lucile. Together with Arua and Kuku, she joins up with Ryner and Ferris's company and travels with the Anti-Roland Coalition.
Voiced by: Tomosa Murata