Spoiler-Alert!
This article contains mild spoilers for almost all Star Trek episodes in which Q appears. These include: "Encounter at Farpoint" (TNG S01E01 and E02), "Hide and Q" (TNG S01E10), "Déjà Q" (TNG S03E13), "Tapestry" (TNG S06E15), "Death Wish" (VOY S02E18), "The Q and the Grey" (VOY S03E11) and "Q2" (VOY S07E19).
Q may be popular with the viewers of the late 20th and early 21st century, but for Jean-Luc Picard and Catherine Janeway and everyone on board the Enterprise and Voyager, he is more of a nuisance - and a very dangerous one at that. Q loves chaos and very rarely reveals his intentions, but that's not even the main problem: Q possesses an extraordinary power that makes him seem almost like a god. But in the end, even he is not omnipotent, as already mentioned in the article "Star Trek: How the encounter at Farpoint changed the fate of humankind". At this point, however, I would like to go into this in more detail.