Echo

Echo is a minor character in Gravity Rush and Gravity Rush 2. She attended Arquebus Academy, is Newt's childhood friend, and later his wife in Gravity Rush 2. Echo ran off one day when she saw Newt and her classmates laughing at her, having not realized at the time that Newt was actually laughing because he liked her. She encountered a Nevi sometime after (or possibly before the event) and it was trying to protect and comfort her, and so she decided to keep it in her bag. Students from her school, Arquebus Academy, took notice of her weird actions with the bag—talking to it, being overprotective of it, and freaking out whenever anyone got close to the bag, which led to students giving her the nickname "Big Bag". Sooner or later she went missing.