yes you can. its a part of the whole ranger side quest. To initiate the side quest talk to clarke [ you know the leader of the teal panther's gang, the red haired woman if you don't remember] in celia north.
the location is changed to a factory in celia north. you need to speak to a guy who'll ask credits to open up the factory.
And about the other pokemon in celia Docks you have to obtain the 5th badge to get them