What was that old cartoon where the bad guys would launch off of a train track into another world?

I mildly remember this old show about these bad guys would launch off of a train track or rollercoaster of some kind and try to catch these creatures and the good guys would have to stop them because they befreinded the creatures, it kind of reminded me of pokemon but it was not, it was on I believe around the same time as the original Pokemon series but it is all a bit fogy, does anyone know the name of this old cartoon?