During the attack on the weather station, the ghost fog (or the zombies) cut the building's power supply, causing the man inside to open the door and get killed.Seas mockingly tells a member of the Five who's about to light up to enjoy One Last Smoke, but it turns out his cigarette lighter has a laser gun that he uses to shoot out the chandelier, plunging the room into darkness so they can turn on their assassins. The villainous Captain Seas invites Doc Savage and his Fabulous Five to dinner, only for his waiters to produce guns after the meal and press them to our heroes necks. It works on some reporters' cameras, but utterly fails to give Bane pause, given that he grew up in an underground prison and can adapt to the dark just fine. Inverted in The Dark Knight Rises: Batman whips out a new gadget in the form of the ability to turn off the lights.When the horde of flying demons is approaching the title character and Angela Dodson, all nearby lights (including the street lights) go out, leaving the main characters in darkness. Since Riddick can see in darkness just as easily as in light, he easily defeats the necromongers as they fumble around in the dark. There's a scene in The Chronicles of Riddick where Riddick is accosted by a group of necromongers, and he puts out two candles with the palms of his hands, plunging the room into darkness.In the last act of Pitch Black, the more intelligent of the creatures appear to be trying to do this by attacking those holding light sources.
Watson: What do you mean "they cut the power"? How could they cut the power, man? They're animals! It goes much differently than Tagge has planned. Tagge takes a lightsaber to a junction box, killing the lights in the hangar, aiming to keep Luke unable to see his adversary, while Tagge's cybernetic visor can see Luke perfectly. Star Wars (Marvel 1977) issue #33 has Baron Tagge try to thwart Luke Skywalker's escape from his ship's hangar bay.Night Girl can also see in the dark, and carries smoke bombs and devices that can shut off lights both to blind enemies and allow her to use her Super Strength that only works in the dark. In Legion of Super-Heroes, Shadow Lass can manipulate darkness and see in the dark, and so often blinds enemies with darkness.
However, clever use of a Lantern Ring can subvert this effect, as shown by Hal Jordan.
Might be caused by Casting a Shadow powers, it often leads to Darkness Equals Death, and is followed by Light-Flicker Teleportation, where a character is replaced by the criminal after a light-off. If playing a Stealth-Based Game, it's a good bet there are game mechanics devoted to doing just that. Sometimes overlaps with Nothing Is Scarier when someone (or something) kills the lights as a psychological warfare tactic, leaving the hero(s) staring into the dark for a prolonged stretch wondering where the attack will come from, and what exactly it is that they're fighting.