Dungeons & Dragons
The wight has been a constant member of the Dungeons & Dragons army of the undead, presented as intelligent but malevolent free-willed animated corpses with the ability to drain levels. They usually arise to guard their own tombs from being destroyed. Their level drain ability (with no saving throw!) combined with their immunity to everything but magic and silver weapons, as well as their propensity to appear at low levels made them absolutely terrifying in earlier editions of Dungeons & Dragons. They got a massive nerf in 5e, turning their level drains into temporary loss of maximum hit points, but also giving them proficiency in melee and ranged weapons, allowing them to attack from a distance if they choose to do so.
Vampire: The Masquerade
Wights are what vampires become after their Humanity or Path of Enlightenment rating drops to 0, and their beast takes them over completely. If their willpower is high enough, they may retain some vague memories and skills from their former existence, a capability for simple strategy and reason, and an elementary grasp of disciplines. Unless they were complete monsters in life, they probably won't kill everything in sight, so long as they're not hungry and in immediate danger, and may even pursue interests related to its former nature. They do however become susceptible to the traditional weakness' of vampires (religious symbols, garlic, etc.), True Faith, and will immediately flee from fire and sunlight.
In the Warhammer Fantasy setting, wights are the animated skeletons of ancient warlords and champions who were buried in funeral mounds scattered throughout the Empire. The special treatment given to these corpses at their death makes them stronger and more intelligent than the run-of-the-mill skeletons - the lingering enchantments on their weapons don't hurt - and thus they are some of the most potent heavy troopers and champions in the armies of the Vampire Counts that aren't actually vampires themselves.
|This article or section is about Monstergirls (or a monster that is frequently depicted as a Monstergirl), something that /tg/ widely considers to be the purest form of awesome. Expect PROMOTIONS! and /d/elight in equal measure, often with drawfaggotry or writefaggotry to match.|
Since a "wight" is usually defined as just a "zombie with free will and intelligence", it should be no surprise that they can sometimes get the same monstergirlifying treatment from those unafraid of necrophilia.
Perhaps the most prominent example of a wight MG on /tg/ is found in the Monster Girl Encyclopedia. Here, they are a unique strain of zombie that either arose from the corpse of an aristocrat or adventurer, or was a zombie mamono that built up a truly incredible level of magical energy through constant sex. They possess great magical powers, if not in the same way as a lich, and create dark kingdoms full of undead type monstergirls where they rule as pampered aristocrats.
It can be said that their ownership of such kingdoms is due to their "Wight Privilege".