Every "Star Trek" episode featuring the omnipotent entity Q who caused trouble for various Starfleet crews during the 24th and 25th Centuries.
Q has appeared in five "Star Trek" series ("The Next Generation", "Deep Space Nine", "Voyager", "Lower Decks" and "Picard") from 1987 to 2023.
He is the only antagonist to face Captains Picard, Sisko and Janeway as well as the only character to meet all three of them on screen.
He only appears in the "Picard" episode "Two of One" in archive footage but it is included here for the sake of completeness.
