Description

You can meet him in the forest's "Grey Flower Field". Hidden behind a mask, you can't see his bare face, but his eyes reflect a certain sadness. Transparent, it's not possible to touch his body. Only Tiana and the Seven Dwarves are able to see Nightmare. Much like the other residents of the cursed Lost Forest, Nightmare's true name is a mystery, and was placed by the dwarves.

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[Taken from theofficial website]