Katherine is a digital entity made up of data. She was originally made to spy on the human world for the organization known as "Hiearchy". But as she was bien tested the war broke out and she was lost in the digital world. She was found by Orphanimon and taken to the Highlight Heavens. She was then given the name Katherine because Orphanimon saw it fitting for a human. She was then raised to be the princess of the digital world.