Xebekal

Xebekal was a beholder transmuted by Arcturia in Undermountain in the early 1490s DR.

History
Sometime before the Year of Three Ships Sailing, 1492 DR, Xebekal invaded Arcturiadoom to conquer it. However, Arcturia using a wish spell and transformed the beholder into a tapestry. From then on, the beholder retained its darkvision and could see whatever was in front of it, but nothing behind it. It couldn't speak, and its movement was limited to harmless flapping.