Nagilum

Biography
The being known only as Nagilum was a mysterious disembodied cosmic entity that existed outside the known universe. It possessed an innate curiosity about the inhabited universe and manifested itself in the Morgana Quadrant.

In the year 2265 on Stardate: 42193.6, Nagilum encountered the Federation Starfleet exploration vessel, the USS Enterprise NCC-1701-D. It trapped the ship within a hole in space, and the crew of the vessel could not detect any life form readings to indicate Nagilum's presence. Nagilum manifested a face for itself so it could communicate with the crew, which was captained by Jean-Luc Picard. As a genderless being, Nagilum was perplexed by the differences in the sexes, in particular, humanity's need for procreation.

It tried to understand the limited existence of humanity and experimented upon this notion by killing the ship's Conn officer, Haskell. In order to get Nagilum to release the Enterprise, Captain Picard activated the ship's self-destruct sequence. Frustrated, and losing interest, Nagilum let the ship go, citing that as a species the two had no common ground with one another save curiosity.