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* ''TabletopGame/BattleTech'': Due to a shortage of talented pilots and officers, militaries are willing to put up with eccentric soldiers and officers as long as their battlefield performance is stellar. Examples include a famous ''Urbanmech'' lance commander, Lt. Wellesley, who obsessively collects antique teapots (itself a probable ShoutOut to M'Quve from ''Anime/MobileSuitGundam''), and Ace Darwin, a talented improviser and mercenary warrior who nonetheless constantly causes {{Noodle Incident}}s and pilots a [[VisualPun bright pink]] ''[[Franchise/ThePinkPanther Panther]]'' everywhere he goes.
** The Eridani Light Horse are considered this to a T. The ELH insist that they are still in active service to the Star League, in spite of the Star League having been defunct for over 200 years, and that the mercenary contracts they sign with the various Great Houses are merely resupply and basing rights agreements with the governing bodies of the states that make up the Star League. The ELH still wears Star League uniforms and it's banner is the symbol of the Star League Defense Force, bordered in black and always presented at half-mast. However, in spite of the overenthusiastic Star League re-enacting and all-pervasive nostalgia, the ELH is widely considered to be one of the finest combined arms brigades in existence, in no small part because they ''also'' maintain the rigorous training standards and tactical proficiency that made the SLDF such a formidable force in the first place.
** Snord's Irregulars. Cranston Snord was a Mechwarrior and collector of Star League memorabilia, who one day decided to gather up a crew of similar people and form a mercenary company. Some people joked that Snord never really went merc, he just began collecting weirdos. Nevertheless, in spite of their idiosyncrasies, which range from [[ElvisImpersonator dressing and talking like Elvis]] to collecting pickled human organs, Snord's Irregulars are considered to be the best deep raiders in the Inner Sphere bar none, even outshining groups like Natasha Kerensky's Widowmakers.
* ''TabletopGame/DungeonsAndDragons'': A pretty common character archetype. Since the only in-game impact personality traits has is on role-play, you can play a character completely oblivious to how great of a warrior he is. [[WebAnimation/AnimatedSpellbook Zee Bashew]]'s build [[https://www.youtube.com/watch?v=fSK0AcFqkyU Build Murray]] has this concept in mind.
* ''TabletopGame/{{GURPS}}'': The game's use of Flaws in character creation makes it fairly easy to make this kind of character, if your DM will allow you to get away with flaws that are merely amusing rather than especially detrimental. Even if detrimental, so long as they aren't specifically die based, you can probably change them to amusing in certain encounters if you play the cards right.
* ''TabletopGame/{{Rifts}}'':
** The Crazies character class are warriors with cybernetic brain implants that [[LightningBruiser greatly enhances their physical prowess]] (and even grant limited PsychicPowers), [[WithGreatPowerComesGreatInsanity at the cost of their mental stability]].
** There's also Dr. Desmond Bradford, head of the Coalition State's Lone Star facility. He nurses a serious God Complex, performs illegal and extremelly dangerous genetics experiments without batting an eye, has people killed whom he suspects know too much and even drops subtle hints that he was behind it, and flaunts his intellectual superiority at every opportunity. But he's also the only man smart enough to have figured out how to get the Lone Star Complex, a laboratory from before AfterTheEnd, running, and continues to prove his brilliance time and again. To completely solidify his job security, he's a close childhood friend of Emperor Prosek's. These two factors combine so that even the Emperor's beloved son is unwilling to express his doubts about Bradford without ironclad evidence, which Bradford is too smart to let happen.
* ''TabletopGame/{{Shadowrun}}'': Besides the deliberate use of Flaws in character creation, ''Shadowrun'' makes a point of saying that the Awakened (anyone capable of using magic) are often even quirkier than other characters. Due to the rarity of magic-users, they are able to get away with things that would make anyone else unemployable. Just picking to come from a shamanic background may result in built-in personality issues even before you get around to inventing ones specific to your character.
* ''TabletopGame/Warhammer40000'':
** Adeptus Mechanicus are a sect of [[MadScientist Mad Engineers]] who have the [[MachineWorship theology]] of a [[GodGuise cult]], even for things they fully understand. In fact, the rigorously theological Imperium, in which any heresy against the God-Emperor is punishable by several of the more eccentric forms of violence, is propped up by the Mechanicus, who openly worship machines, and the Space Marine Chapters, who each have their own wacky and heretical Emperor Cult, but who's going to tell them to change?
*** For some reason, an exception was made the Steel Cobras chapter of the Space Marines, who were mercilessly eradicated for their worship of the Emperor as an animal totem. One step too far out of dogma? Well yes. The Emperor is the epitome of the holy human form. Worshiping Him as an animal is definitely heresy.
*** For most Space Marine chapters, the fact that they are literally descended from the GodEmperor himself (in a manner of speaking) [[WeirdnessCoupon gives them a free pass]] from accusations of heresy by the Ecclesiarchy, provided that their deviations from the belief in the divinity of the Emperor are discrete and kept to themselves.
*** The Mechanicum gets around it by simply saying that the Omnissiah (their machine god) is simply an aspect of the God-Emperor. It is this technicality that makes their own religion tolerable to the mainstream Imperial Cult. The Mechanicus have been pulling this since the days of the determinedly atheistic Great Crusade, where their cultism was accepted despite a blanket ban on all forms of religion because they were just too important to piss off.
** Some types of [[OurOrcsAreDifferent Ork]] also qualify. Burna Boyz are pyromaniacs carrying backpacks filled with promethium and willing to set their buddies on fire, but are useful in battle and for metal work. Weirdboyz have a habit of making heads explode, but their powers can be directed at their foes if they focus. Mad Dok Grotsnik performs surgery unorthodox even by Ork standards and often times his bionics will "mysteriously" explode if the owner annoys Grotsnik, but he saved the life of his tribe boss and is highly dangerous in battle.
** Quite a few inquisitors tend to be rather... eccentric, to say the least. They can be rather affable at first glance, or maybe a bit weird depending on how radically they lean, but don't take that as a sign of weakness, or they will kill you on the spot, and that's just if you're lucky. Remember, these are the people who can eliminate entire planets at the snap of a finger, so...
** The entire Space Wolves chapter of Space Marines. They've pretty much entirely discarded the rulebook, deviating wildly from the official code in terms of force organisation, tactical doctrine, career progression, personal grooming, and not occasionally turning into a gigantic berserk werewolf-thing, and they even practice worship of Fenrisian spirits, but they have escaped official censure through a mixture of unerring loyalty to the Emperor and sheer badassery. There are plenty of other chapters that have their share of deviations, but most of them are extremely secretive about it. The Space Wolves don't even pretend to play by the rules.
** Many other Space Marines have practices and beliefs that could be best described as "exotic", at times skirting into outright heresy. Quite a few of them actually count as mutants by Imperial doctrine as well. However, the Inquisition mostly looks the other way entirely due to the fact these chapters get results.
** The Jokearo are a race of space monkeys who look and act like... well, monkeys. That said, they don't let something as petty as "not being sapient" stop them from producing incredibly advanced devices, including some very nice digital weapons technology. It's said that their creations make ''[[ProudScholarRace Eldar]]'' technology look crude in comparison. And they seem to produce all these things from instinct alone. Fulfilling the other half of this trope, the Imperium drops their standard operating procedure for dealing with xenos lifeforms and use of their equipment is sanctioned by Imperial officials, although all attempts to imprison or otherwise hold Jokearo against their will have ended in abysmal failure, due to the Jokearo invariably producing something in their captivity and escaping.
** Nemesor Zahndrekh was one of the Necrontyr's greatest generals in life, but has succumbed to madness upon reanimation; he still believes he is a flesh-and-blood being, and that he's still fighting the inter-dynastic wars of his youth. Zahndrekh still follows ancient Necrontyr rites of war which means he is one of the few people in the setting who treats military prisoners rather civilly; he tends to take prisoners to his ship, show them the glories of the Necrontyr empire, and treat them to feasts and meals, leaving his [[BeleagueredAssistant Beleaguered Bodyguard]] Obyron to ensure that his master's prisoners are dropped off somewhere or [[MakeItLookLikeAnAccident "killed while trying to escape"]]. Despite his robo-Alzheimer's, Zahndrekh is still a skilled ruler and an ''amazing'' general. It is suspected by members of his own court that Obyron is only "following" him to use his tactical genius; as Obyron could easily dispatch Zahndrekh and rule the dynasty himself.
*** It's been hinted recently that the Nemesor is [[ObfuscatingStupidity more aware]] than he acts, though doesn't want to be drawn into politics or admit the decline of his race.
** Many of the greatest Imperial Guard regiments are highly unorthodox in their operations. The Catachan Jungle Fighters, for example, will refuse to take a bath even on pain of death out of fear of losing their ambient smell and are often so paranoid about their surroundings that they'd be institutionalised on any other planet, but this is because they come from one of the deadliest {{Death World}}s in the whole galaxy. They're masters of wilderness survival and guerrila warfare and thus are the go-to regiment to deploy on any planet which would (at times literally) eat a more formalised Cadian-style regiment alive.
* ''TabletopGame/WarhammerFantasy:''
** Marius Leitdorf, the "Mad Count", of the Empire is a perfect example. His mood swings widely, from thinking he's invincible to screaming vulgar insults at the enemy. The whole time he's getting tactical advice from his friend "Daisy Kurt Von Helboring II", who just so happens to be his horse. Despite it all he's a skilled warrior, and his insanity has proven useful in battle numerous times.
** The natives of the Bretonnian Duchy of Brionne have a reputation as eccentric, sheltered fops obsessed with romance and bad poetry. This reputation is by and large well deserved -- Brionne is one of the safest of the Bretonnian duchies, and its nobles consequently have a lot of spare time to devote to courting, singing odes to their beloveds, and ordering peasant villages torn down and rebuilt to be more aesthetically pleasing. They are still highly competent, well-trained warriors, however, and in battle can switch between composing cheesy love poems to slaughtering foes and back with great ease.
** Bragg the Gutsman, is the dreaded of the entire Ogre race, feared for the grisly means by which he'll kill members of his own race who cross him. He's openly welcome in every tribe he encounters due to his skill as a peerless killer. Averted in that he will eventually kill someone for one reason or another and be kicked out.

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