You can find togetic!
Go into the Fight area and next to the battle tower on the left will be a different battling room walk into there and you can b able to vs every pokemon
Well...Maybe if you battle more and go in tall grass in different places you would have seen all 210 pokemon .
I suggest battling a lot of trainers.they always have different pokemon
Walk though tall grass a lot and vs every opponent
You can find all of them but ONE! The evolve form of togepi.