Q was one of Star Trek's greatest villains, and the omnipotent space god starred in some of the very best episodes of Star Trek: The Next Generation. Debuting in the show's very first episode, Q returned on many occasions throughout The Next Generation's seven-season run to vex the crew of the USS Enterprise with his shenanigans. Played by the incomparable John de Lancie, Q had a bombastic personality, and he seemed to enjoy grinding the gears of Captain Jean-Luc Picard (Patrick Stewart). Despite every problem he put the captain through, Q's curiosity was his strongest aspect, and he always elevated any Star Trek story he was a part of.
Gifted with seemingly endless power, Q used his unique set of skills to put the humanity of the Enterprisecrew through many tests, and he often lorded over the universe as Star Trek's resident space god. Though he was more of a trickster than a downright evil being, Q's designs for Captain Picard were sometimes quite cruel, and he even put the entire Alpha Quadrant in danger by introducing The Borg. Like most omnipotent beings, his absolute power corrupted him absolutely, and he learned a lesson or two from the people he was trying to instruct.