Not officially a city of Popomundo many people have come across it whilst viewing character profiles, espcially those of the game developers. This is not coincidence. It is a test city that is often used as a playground before implementing the tested changes to the rest of the game.
It is not possible to travel to Bombay by tour bus or by aeroplane. It appears the only way to get to the city is by being able to teleport, an action only available to the developers.