The Devidians are antagonists of Star Trek TNG that appear in Time's Arrow as spectral ghosts that are capable of time travel and have a fondness for human neural energies. They also feature heavily in some Star Trek books, so let's take a look.

Star Trek Coda series owned by CBS Studios Inc and published by Gallery Books
Star Trek Online developed by Cryptic Studios and Perfect World.
Star Trek Picard/Strange New Worlds/Lower Decks/Enterprise/Voyager/Deep Space Nine/Discovery and The Next Generation are all owned by Paramount Pictures/CBS and distributed by CBS.
This Video is for critical purposes with commentary.