Arthur is the AI designed by Otto Goodwin and is widely applied as part of the Lookinglass software. Arthur is capable of recognizing voice patterns across the whole city, using all devices that have Lookingglass installed on them. The AI is frequently used by the Goodwin twins and Jimmy Pritchard throughout the whole series. Arthur can appear on mirrors and windows in the form of a blue cartoon boy, either when summoned or reporting on results from the tasks it has been assigned.