Weird folder keeps appearing in the internal memory
It looks like the folder which many developers use to store the image cache while parsing a json.

As can be seen from the folder name, the folder was introduced in some sort of tutorial or demo given to the developers who are trying to parse json in their apps. However, the takers of the tutorial continued to use the same code in their apps.

There's nothing to worry about this folder. It is just for caching the images and I believe it makes room in a number of Android apps.