Four. In the game "Kingdom of Locke", there are four super-evolved places, namely Vesuvius Volcano Center, Water System Oceanography Institute, Grass System Field Research Institute and Ice System White Iceberg. Among them, the fire pets can be super-evolved, namely Vulcan, Sonic Dog and Flame, and the water pets can be obtained by using the key of green destiny and brushing jelly. For pets with grass attributes, they need to go to the field research institute of grass system to start their super-evolutionary journey.