Thank you for stopping them, I owe you my life. I'm Sorry that I could not tell you more earlier, I was paralyzed with fear. Now that I'm not in danger I can give you some more details.
In my time period, the map of Kanto looks nearly the same as it does today. The differences are that the cities have a lot more density and some buildings nearly touch the sky.
As cities completed enormous and high technology construction projects, they added the word "Neo" to their city names in order to show off their success. Walkways connect all of the cities in Kanto but the Magnet train also has one stop in every town.
The people still liked to enjoy nature however, so the ground level in between cities was allowed to grow and develop undisturbed. (Pokemon can be found and caught in these places although most of them are mechanical)
Back to the task at hand. My former employer became suspicous of me when I was caught poking around 2 places:
Pewter International Refineries - Located in the High tech industrial town of Neo Pewter city. Responsible for materials and assembly of robotic pokemon.
Lavender Broadcasting - Located in the huge shopping area of Neo Lavender town. They make the holographic advertisements and sell the robots to the public here.
I suspect the CEO of one of these companies of keeping the pokemon locked up somewhere. If you can set the pokemon free then it should expose the companies as the crooks that they are.
To make it easier to get around, I can perform a 2nd upgrade to any pokegear/ pokedex. The upgrade will allow you to display an arrow that will always point to the nearest pokemon center. It will also give you unlimited rides on the Magnet train.
Please remember that robotic pokemon used for securtiy purposes will have higher stats than normal and you should avoid fighting them if possible. The Snorlax that you managed to defeat was only a rank C guard bot. Only the richest people can afford the advanced security types.
Whenever you are ready, you need only to touch this crystal to be transported to Mt. Moon 3010. I have linked the crystal to both time periods so that you will have a way to return here. Once you arrive at Mt. Moon in the future, Neo Cerulean city is straight down the hill.
I will remain here to guard the time crystal. Good luck, the pokemon are counting on you..