Board Thread:Wiki Discussion/@comment-26843781-20160301110343/@comment-26814804-20160427214914

CrusaderDeleters wrote: Stevethebarbarian wrote: No, the official Undertale tarot cards confirm that the Mysteryman is in fact W. D. Gaster. Official... tarot cards? For some reason I have a feeling this isn't official at all.

Go to http://www.fangamer.com/collections/undertale.

The official Undertale store.