User blog comment:Otakon7/Otakon7's Buddyfight Simulator/@comment-2234004-20160308211931/@comment-2234004-20160308220448

Good news, it doesn't need a gallery, it just needs a thumbnail, which seems to be generated by the wikia itself, but not sure how it does that.

ie. here is the data that returns a thumbnail link

http://buddyfight.wikia.com/api/v1/Articles/Details?ids=150&titles=Planet+Memory&abstract=500&width=200&height=200

This one does not:

http://buddyfight.wikia.com/api/v1/Articles/Details?ids=150&titles=Brave+Memory&abstract=500&width=200&height=200

Try saving it now