The Downtown was a a part of Chroma City in de Blob that was invaded and controlled by the INKT Corporation. It was once the site of many sports tournaments, but then INKT turned it into their main site for the police stations and for making Raydians practice the Inkies' religion by building the Church of Inktology.
The district was invaded by the INKT Corporation and its color was wiped out. Because the Inkies and Leechbots had failed to protect Uptown from Blob, Comrade Black stepped up security further by placing Heavy Inkies in Downtown to stop him. Blob ended up breaking through the security, coloring Downtown and transforming the Church back to its original form.