->''"Ares the flier, I bond to you,''\\
''Our life and death are one, we two,''\\
''In dark, in flame, in war, in strife,''\\
''I save you as I save my life."''
-->-- ''TheUnderlandChronicles''

Bond Creatures choose a human partner to share their power. Often they can reject an unsuitable human partner or reveal a new ability or level of power if its [[PsychicLink Link]] and/or {{Synchronization}} with its human user is particularly high. In such cases they may form a MentalFusion or allow the human to [[AnimalEyeSpy see through their eyes]]. They sometimes double as a MoralityPet.

A magic user's {{familiar}} may ([[OurMonstersAreDifferent depending on specific interpretation]]) be one of these, as may a SapientSteed that OnlyTheChosenMayRide, especially in case of {{Dragon Rider}}s. Compare EmpathyPet, EmpathicWeapon, LivingWeapon, AttackAnimal (possibly EquippableAlly) and {{Mons}}. In some cases an ImaginaryFriend can also function as a creature or person bonded to the character imagining them.

See also PsychicLink for similar bonds between humanoids.

They definitely are not [[ThreateningShark frickin sharks]] with FrickinLaserBeams on their [[RuleOfThree frickin heads]]... those are ''Film/JamesBond'' [[IncrediblyLamePun Creatures.]] Also not to be confused with [[Film/JamesBond Bond Girls]], which are a [[MsFanservice different order of creature]] entirely.
----
!!Examples

[[foldercontrol]]

[[folder:Anime]]
* ''Manga/{{Bleach}}'': In the anime series there is a race called Bounts, a vampire variant, each of whom has a Doll, which seems to be a type of elemental familiar. Dolls will turn on and kill a weak master; this suggests that although the individual Bount's elemental affinity is an internal characteristic that determines what Doll they can summon, the Dolls come from the environment and return to the environment when their masters die. Dolls don't take mates or reproduce.
* ''Manga/{{Devilman}}'': Demons in this series are ancient organisms who can fuse with other living things and inanimate objects to gain many abilities and powers from what they've fused with, taking them over completely. Thus they look like the chimerical creatures from ancient texts. They have psychic powers normally of varying strengths. However, human consciousness is lethal to them. But a person who's scared or otherwise loses control of their higher mental functions can be taken over. Should that person have a pure heart, however...they will posess the demon's flesh and gain their superpowers. And thus Devilman was born when Akira Fudo managed to merge with a demon.
* ''Anime/NeonGenesisEvangelion'': While not sentient or even as independent as an animal, mechas in this series are picky about their human partners and may go crazy or refuse to work for the wrong pilot, or even the right pilot in the wrong state of mind. It is mentioned that human minds were either used as a pattern for the Evangelions' AI or were 'eaten' and partially incorporated by the Evangelions in development, and their taste in pilots is an effect of this. This series also shows a strong correspondence between the mecha's body and the pilot's body, with pilots feeling intense pain if the mecha is significantly damaged, for example by ripping off an arm (ShoutOut to older {{Mecha Show}}s like ''[[Anime/MazingerZ the]]'' ''[[Anime/GreatMazinger Mazinger]]'' ''[[Anime/UFORoboGrendizer series]]''. In those series, the wounds the pilot suffered often paralelled the damage his/her HumongousMecha had suffered).
** The pain experienced by the pilot when the EVA is damaged is because they are neurally linked. That is, their nervous system are linked, which is what allows them to move so smoothly instead of in mechanical jerks.
*** Basically, the pilot thinks 'walk' (though on a more instinctual level), and the EVA does so. This is also why the EVA's are so picky with their pilots. There is in fact a certain bond required (The Marduk Institute keeps track of all these pilot prospects, not searching for them as is first stated) between pilot and EVA, and even with that bond, the EVA will respond negatively when the pilot is emotionally unstable. [[ThereAreNoTherapists Which makes it bloody amazing that any of them can pilot them at all really...]]
**** [[spoiler: Actually, it is a known that souls are sacrificed to create Eva. Unit 01 contains the souls of Yui Ikari, Shinji's mother. Unit 02 possesses the soul of Kyoko Zeppelin Soryu, mother of Asuka. There is obviously a required parental soul in each Eva. As an interesting sidenote, all the students in Shinji's class are on the Marduk Report, and none of them have ever mention a mother, only a father. This could lead to the theory that NERV has stolen their mothers in case they need another pilot.]]
**** More accurately it is the brainwave patterns [[spoiler:of said parent that are imprinted upon the Evangelion. Yui didn't survive her encounter because of the lack of understanding of the Evangelions, Kyoko was able to survive because prior to her encounter with Unit 2 because of]] the Magi System, which was then implemented and worked to separate the three portions of Dr Naoko Akagi's Psyche into three parts, herself as a Professional, herself as a Woman and herself as a Mother. [[spoiler:From this a framework with which a person might potentially survive their first synchronization was created.]]
** Crosses into horrific territory when you realize that the pilots merge their souls and minds with the [[EldritchAbomination EVA]] to make it function.
* In ''{{Gasaraki}}'', the demonic looking Kugai, on which the Tactical Armours are based upon, require a certain individual known as a "Kai" to operate them, but first they must also be awakened by a unique ritualistic dance before the Kai can get the Kugai to "open up" so to speak...the Kai also acts as a 'sacrifice' of sorts, being a host that sits inside the Kugai, allowing it to move on its own, but the Kugai is still influenced by the Kai in terms of decision making.
* In ''Anime/IdolmasterXenoglossia'', mechas are powered by alien entities which seem to be telekinetic and of animal intelligence, but probably not human intelligence since they make no attempts at communication. Some mechas bond with a particular partner and will only work for them, while others aren't as picky.
* In ''DragonDrive'', analyzing a teenager's genetic code reveals the dragon they are destined to partner with. These dragons cannot speak and usually go back into storage form when not being used for combat or transport. These dragons thus seem to be a manifestation of their owner's anima or subconscious, not independent creatures. One notable difference between dragons and owners is that dragons usually want to fight when their humans are afraid of overwhelming odds.
* ''Franchise/{{Digimon}},'' depending on the season, choose their partners or have partners assigned to them by higher, godlike Digimon. The bonded {{Mon}}s could "evolve" ("Digivolve" in the dub, to avoid confusion with Pokémon) when their partner was in danger or another condition was met. Sometimes a partner could inadvertently activate a SuperpoweredEvilSide when attempting a forced evolution. In the first series, Anime/DigimonAdventure, if the partner lost their drive, the Digimon partner could possibly even devolve into an earlier stage.
** ''Anime/DigimonTamers'' upped the ante by, at least twice, having the human partners [[ImHavingSoulPains physically affected when their Digimon partners are injured in battle]].
* Duel Monsters in ''Anime/YuGiOhGX'', particulary Judai and Winged Kuriboh, as well as Johan and the Gem Beasts.
* The dragons in ''DragonautTheResonance''. Said resonance is what bonds them with their pilots, though some of the major dragon characters don't play by the normal binding rules.
* ''Ayakashi'' and ''LightNovel/MushiUta'' both have creatures that grant their partner great power, but with the cost that they will eventually either die or suffer some other horrible consequence.
* The dragonets in ''{{Narutaru}}''. They also count as a {{deconstruction}} of the trope because the psychic link transfers ''everything'' the other feels -- ''especially'' pain.
* In ''Anime/{{Mai-HiME}}'', each Hime's child bonds to them through their love/affection for their most important person, bringing a variety of useful (and some [[BlessedWithSuck not so useful]]) abilities. It is revealed early on in the series, that the Hime have to "risk what is most important to them" in order to use their child's power. [[spoiler: Hint: It isn't their own life, as Mai incorrectly assumes.]]
** In ''{{Mai-Otome}}'' the Otome bond to those they protect and serve. It takes their master's approval to materialize their robes, but as the Otome take damage, the master also feels the pain, and if the Otome dies, the master follows suit.
* The Rune Gods of ''Manga/MagicKnightRayearth'' will test their charges to assess the strength of their will. If proven worthy, the Knight will get to summon and wear the Rune God's gigantic armored form into battle, and the Rune God's strength and abilities grow directly in proportion with the Knight's fortitude. The downside is, any injuries the Rune God sustains, the Knight will get too. This is much more notable in the AlternateContinuity of the {{OAV}}.
* Caro and Lutecia of ''MagicalGirlLyricalNanoha'' possess some sort of link with their [[SummonMagic summoned creatures]]. This was best seen during their final battle, where [[spoiler:[[SmugSnake Quattro]]'s VillainOverride]] on Lutecia caused her monsters to cry TearsOfBlood and the less intelligent ones to go berserk.
* The [[{{Mons}} Mamono/Mamodo]] from ''ZatchBell'' need to find a human partner to supply [[{{Mana}} Heart Power]] and activate spells while taking part in the king-election tournament on Earth. While a few of these pairs ([[spoiler:Won/Lee, Clear/Vino, Gash/Kiyo]]) develop {{Psychic Link}}s, the Heart Power-link is actually due to the rules of the tournament rather than part of the Mamono's nature and the Mamono don't even get to choose their partner themselves.
* The Mulian mecha in ''RahXephon'' function like this, bonding with individuals called "Instrumentalists". It responds to its pilot's moods, and will act autonomously to protect its pilot if the pilot is in distress. [[spoiler:the connection for the mulian mecha has added "bonus" of full {{Synchronization}}--so killing the dolem kills the pilot. The connection runs deeper still for the Xephon''s'': when Ayato and Quon fully awaken as Instrumentalists, they cease to be human and fuse entirely with the [=RahXephon=] system, effectively ''becoming'' the "machines". It is mentioned, late in the series, that when Ayato is looking at the Xephon or at Ixtli, he is looking at another aspect of himself.]]
* In ''Anime/{{Naruto}}'', Samehada ''is'' a "[[{{BFS}} frickin]] [[ThreateningShark shark]]" bond sword. The sword chooses its wielder based on their amount of energy and the taste of it, though it can be forced to be loyal to a previous wielder if that wielder has enough power or a strong relationship with it. If an unfit wielder tries to use it, spikes protrude from its handle and it runs back to its true master.
* In Manga/YuYuHakusho, Yusuke received an egg that would hatch a spirit beast. If he's good it will be this. If he isn't, the beast will eat his soul. The egg he originally got would have been the latter but he sacrificed it to save Keiko. He gets another and it ends up hatching a good spirit beast, Puu.
** In the manga, there was only one egg, and the nature of the creature produced was supposed to be determined by the type of energy Yuusuke gave off. If bad, he'd get eaten and the filing problem he represented would be over; if good, he'd earned resurrection. But then scheduling issues caused Koenma to ditch that plan and just resurrect him, and the egg presumably hung around in spiritual form being ignored until ready to hatch. Puu originally resembles a blue Furby with huge floppy ears, but evolves into a sort of phoenix thing [[spoiler:after Yuusuke is resurrected again as a Mazoku.]]
* ''Manga/SoulEater'' has Demon Weapons. They seem to be a werewolf variant, created by experiments a witch carried out on humans in the distant past, but transforming into a weapon instead of an animal; they are born and age like humans, are capable of reproducing with humans and having human children. They are thus unique among anime examples of bond creatures, following more of a western model. The bond is also not lifelong, and can be friendly or romantic.
[[/folder]]

[[folder: Comic Books ]]
* ''ElfQuest'' by Wendi and Richard Pini features a tribe of 'american indian elves' which bond with wolves as mounts that they ride mainly while hunting. Unlike many types of creature bond, this does not take place at birth, one partner can survive the death of the other, and an elf whose wolf has died can bond with another one. Considering that the elves' lifespans are substantially longer than normal wolves (Pini elves can live thousands of years IIRC), they rather have to be able to survive the death of the other.
** In one of the stories from the ''Elfquest'' anthology novel ''The Blood of Ten Chiefs'' it is explained the Wolfrider wolves are, in fact, [[spoiler: distantly related to the Wolfrider elves.]] All Wolfriders are descended from [[spoiler: an elf/wolf hybrid who, with an elf mate, produced many offspring; some more wolf-like than others. The more wolf-like offspring took to inbreeding, eventually producing offspring who were wholly wolf.]] So while the Wolfriders are [[spoiler: elves with a few wolf genes in their DNA]] the wolves they ride are [[spoiler: wolves with a few elf genes in their DNA.]] This allows Wolfriders and their wolves to form strong telepathic bonds similar to the bonds elves form with their 'soul-mates.'
* The ComicBook/{{Venom}} symbiote from ''{{Spiderman}}'' fits about every aspect here. It grants power to its hosts, more the more closely it binds -- why Venom is stronger than black-suit Spiderman. It is also capable of abandoning its hosts -- leaving a particularly inept one mid-jump to plummet to his death. This may vary from host to host, though. While it "shares" power (feeding off of the host's adrenaline), it can also take over (Peter Parker's sleep-slinging as an example).
* The Comicbook/GhostRider is a mortal man bonded with a demonic entity; the original, and largely most well known Rider is motorcycle stunt rider Johnny Blaze and the demon Zarathos. Writer Jason Aaron's run retcons this; the Spirits of Vengeance are living spirit-weapons from Heaven (albeit not angels), bonded to mortal hosts.
* Comicbook/GreenLantern [[GreenLanternRing rings]] (Actually, all of the spectrum rings for that matter) seek out hosts that they deem worthy based on their personal settings. Green Lanterns are chosen for their willpower, Red Lanterns for their rage, Yellow Lanterns for their ability to cause fear, etc.
[[/folder]]

[[folder:Film]]
* In ''Film/{{Avatar}}'', the Na'vi create mindlinks with various animals, most notably the "banshees", which are similar to [[DragonRider dragons]].
[[/folder]]

[[folder:Literature]]
* TimothyZahn's ''{{Dragonback}}'' books feature the K'da, a [[OurDragonsAreDifferent dragonlike]] sentient race with the capability to become a two-dimensional [[FusionDance 'tattoo' on the skin of a]] [[TheSymbiote host/symbiote]], with the corollary that if they go for more that six hours without doing so, they turn 2D anyway [[BlessedWithSuck and die]]. Normally their hosts are a race called the Shontine, but when the K'da warrior Draycos bonds with the [[HumansAreSpecial human]] Jack Morgan, he becomes healthier, stronger and smarter, and even gains new powers--[[spoiler: and it turns out that a K'da fused to a human can withstand [[NamesToRunAwayFromReallyFast the Death superweapon]]]].
* The night horses in Creator/CJCherryh's ''Rider'' series are a horse-shaped carnivorous telepathic alien species. The horses bond with humans since they enjoy the complexity of the human mind, and ham, and humans bond with the horses so they'll help protect the humans from the world's other telepathic carnivores, which like to pull {{Jedi Mind Trick}}s in order to eat the humans.
* David B. Coe's ''The Lon Tobyn Chronicle'' has an entire order of people who form bonds with otherwise ordinary animals, mostly birds. The birds don't stay with the humans forever though, they die just as ordinary animals would.
* Robert D. San Soucie's short story ''Circus Dreams'' has a demon that forms a bond with a tormented young boy and kills the bullies he's afraid to stand up to. Unlike the other examples on this page, nothing good comes from this relationship whatsoever.
* The {{Goosebumps}} novella, ''How I Got My Shrunken Head'', in which the titular head is a mystical, sentient artifact from the remote island of Baladora. It forms a telepathic link with the protagonist and helps him activate his latent PsychicPowers.
* Creator/AlanDeanFoster's ''HumanxCommonwealth'' books portray an empathic bond between Flinx and the minidrag Pip. She amplifies his PsychicPowers whenever she's in his proximity.
** ''Midworld'' showcases a unique plant/human symbiosis in the form of the furcots, intelligent guardians created by the [[spoiler:planet's supermind]] to act as lifelong companions for the [[LostColony humans living there]].
* Gayle Greeno's ''Ghatti's Tale'' series is a modern {{fantasy}} series in which the telepathic animals are Ghatti, large catlike animals that can only speak mind to mind.
* Peter Hamilton's ''Literature/TheNightsDawnTrilogy'' trilogy: biotech can be used to create bond creatures. Those that matter most are Voidhawks, sentient living starships which bond with a captain, conceived and gestated at the same time the voidhawk egg is laid. There are also Blackhawks, a voidhawk variant, with a shorter life span but greatly improved combat performance which are used by 'independent' captains, who purchase the eggs and bond as adult via an implant.
** It is also shown that humans can be "bonded" to other humans, leaving them at the mercy of their master. They can then be observed, controlled or killed at will.
* RobinHobb's ''Literature/{{Farseer}}'' trilogy has the Wit (aka The Old Blood) which allows certain bloodlines to bond with animals. Not all animals are candidates for bonding, only those also of the Old Blood. The protagonist's bond is with a wolf called Nighteyes. The bonding process can go horribly wrong, as the protagonist learns more about when he is able to spend time in a Witted community. (They are discriminated against, and must hide their relationships with their Bond Creatures in all but their own closed communities.)
** He encounters a man who as a baby bonded with a flock of sparrows. The man effectively has no mind of his own, as his mind was linked so young to a lot of small, not very bright creatures scattered all over the place.
** The protagonist himself is considered to have bonded too young, and to have interfered with Nighteyes' development as a wolf; those who were brought up in Witted culture are expected to let their Bond Creatures live 'naturally' and without interference. (The fact that Nighteyes doesn't ''want'' to dig his own lair and actually prefers living in the protagonist's quarters doesn't help them defend themselves from disapproval.)
** The animal partner in the bond can allow the human partner to survive in the animal partner's mind after the human's death. The Witted community considers this a violation of the animal partner's right to live his or her own life (since the human's instincts are expected to be at war with the animal's).
* In P.C. Hodgell's ''Literature/ChroniclesOfTheKencyrath'' series, the ability to form a psychic bond with an animal is one of the more common of the Shanir abilities, common enough that about a dozen students in Jame's year in the MilitaryAcademy of Tentir have it in various forms. Jame becomes bound early on to an ounce, a medium-sized hunting cat; blind from birth, the cat learns to see through her eyes across the link, and occasionally shares its senses with Jame.
* Creator/MercedesLackey has multiple types of Bond Creatures in her ''Literature/HeraldsOfValdemar'' and related books.
** Companions resemble [[CoolHorse pure white horses]], and function as combat mounts and a badge of being a Herald of the nation of Valdemar. They are sentient and have an independent existence including reproducing themselves. In a later book it is revealed that Companions are, in fact, mostly reincarnations of former human Heralds (a rare few are so-called "Groveborn", who could be seen as incarnated minor angels). Strictly speaking, the Companions are not natural creatures; the first few were incarnated by an unnamed deity as the answer to a heartfelt plea made by the first King of Valdemar for some way to guarantee the continuing good and just governance of his new nation.
*** Later in the series, we meet the Firecats -- huge feline reincarnations of the high priests of Vkandis (the ones he approved of, not the ones who got the entry over at CorruptChurch).
** Bondbirds are large birds of prey that are basically animals, although they may be a bit more intelligent than earthly ones. Bondbirds demonstrate AnimalThink, commenting on their humans' lives in terms of nests, mates, hatchlings, prey, and other bird-isms. They were specifically bred for their roles by the Tayledras mages who live in the magic-damaged lands surrounding the Dhorisha plains.
** This is also how dragon mages work in hers and James Mallory's ''Literature/TheObsidianTrilogy'': one dragon and one human or elf are, on some deep level, compatible as platonic soul mates, and they can bond with each other, the mage learning to channel the dragon's vast power through their body. Unlike most forms of magic in the ''Obsidian Trilogy'', requiring require payments and debts, dragon magic has no such requirement--because the dragon's life is inextricably linked to its partner's, and while dragons live nearly forever, even elves do not. The sacrifice this represents means that all magedebts are paid, forever, no questions asked. Dragon mages are, understandably, both feared and desired by both the allied races and the Endarkened.
*** The bonds between elves and unicorns are similar.
** In Lackey's "Skitty" stories--a loose sci-fi adaptation of the Literature/DickWhittington myth--ships' cats are genetically-engineered high-intelligence creatures, some of whom--like the title cat--are telepathic with their handlers.
* Creator/AnneMcCaffrey is probably the archetypal example of bond creatures. Her ''DragonridersOfPern'' series features dragons with near-human intelligence which choose a human partner at hatching (this is called Impression). Riders whose dragon dies often commit suicide; dragons whose rider dies pretty much invariably do. Fire lizards have a mild variant of the Impression (normally it merely helps to organize their swarms, but was turned UpToEleven for dragons). Less well known but also interesting, this author's ''TheShipWho...'' series features spaceships powered by the human minds of people whose bodies were defective or injured, and these {{Sapient Ship}}s, also known as Brains, form partnerships with human Brawns. This bond is not permanent, it may be friendly or romantic, and the telepathic element is enabled by technology.
** Early in the series, it's indicated that romantic feelings between a Brain and his/her Brawn is grounds for the partnership being broken up, as a Brawn who becomes ''too'' attracted to his/her Brain partner may become obsessed and attempt to access what is left of their body, which will kill the Brain. They find a way around this later, using androids.
** [=McCaffrey=]'s dragonriders are parodied in Creator/TerryPratchett's ''Discworld/TheColourOfMagic'', where the dragons only exist because their riders believe in them. Similarly, the dragon in ''Discworld/GuardsGuards!'' is bonded to [[spoiler: Lupine Wonse]], much to his discomfort.
** More recent Pern books, particularly those which [=Todd McCaffrey=] worked on, establish that whers -- dragons' humbler, uglier cousins -- also form psychic bonds with humans. Unlike either dragons or fire lizards, whers can sever their bond voluntarily if they form a solid emotional attachment to a different human, and the death of one partner needn't provoke suicide by the other (though it can) when a wher is involved.
* Sarah Monette and Elizabeth Bear did a brilliant and weirdly hilarious DarkerAndEdgier spin on some of the less charming implications of the Pern series in ''A Companion to Wolves'', which is pretty much Pern WITH GAY VIKINGS and giant sentient wolves replacing dragons.
* ''Literature/TheLegendsongSaga'' has Glynn and Bayard with the She-feinna and [[spoiler: Glynn and (to a lesser extent, Solen) with the He-feinna]]. The feinna link is only designed to be within the species, so linking with a human requires the mind of one of the pair to be reshaped to fit. [[spoiler: This produces some interesting side effects, such as Glynn's extended senses and ability to influence others.]]
* In K.J. Taylor's ''Literature/TheFallenMoon'' trilogy griffins choose a human with strong political or other potential to serve them, giving them in return further status and protection. Griffiners are the equivalent of nobility, with titles being non-hereditary but the children of griffiners being more likely to be chosen in turn. The partnership is non-telepathic and, although cooperative, the griffin is dominant (seriously, who is going to argue too hard with a giant carnivorous griffin?)
* AndreNorton created several of the oldest examples of Bond Creatures in western fiction: ''The Beast Master'', Falconers in the ''WitchWorld'' series and more. Probably she was the inspiration for Mercedes Lackey's and Anne [=McCaffrey's=] later evolutions of the concept.
* Robin D. Owens is a current science-fantasy romance author whose Heart series features telepathic cats called Fams (short for Familiars like witches' familiars) which bond to human owners.
* Similar to the Pern examples (some would say ''too'' similar) are the [[OurDragonsAreDifferent dragons]] and riders in Christopher Paolini's ''Literature/InheritanceCycle''. Dragons and riders form a mental bond, can share each others energy. Dragons [[strike:can't]] rarely survive the rider's death but riders can usually survive the dragon's death at the cost of their mind. Dragons choose their riders before birth, they hatch when they find the one they find worthy.
* JenniferRoberson's ''Cheysuli'' series shows a semi-intelligent empathic alien species of which individuals occasionally (but not usually) bond with humans. (Although the series ''this'' troper read showed individuals of various animal species blessed by the gods with high intelligence with the specific intention of bonding with humans...)
* David Weber's ''Literature/HonorHarrington'' series has treecats, cute, furry, ''seriously'' lethal aliens with empathic abilities; mostly they maintain their own society, but on rare occasions one will form a lifelong psychic/emotional bond with a human, such as our heroine Honor.
** It's described as looking for a glow that fits right with their own. The bond is for life, but while on a planet a 'cat will feel free to go out and seek companionship with its own kind from time to time. 'Cats used to consider this a bonding a bittersweet condition because when the human dies, so does their own will to live. The existence of prolong means humans will eventually learn the pain of the other way around. The other hook is that with exposure to humans, the Treecats have learned sign language and are now able to talk rather than just communicate empathically and non-verbally with their bond humans.
* The ''{{Temeraire}}'' universe subverts the magical psychic soulbond stereotype, in that the bond between dragons and handlers is entirely emotional, rather like a platonic marriage - and like a marriage, they can go horribly wrong, with neglect, abuse, abandonment and heartbreak all inferred over the course of the novels. Still, for the most part dragons and their captains share an intense and mutually beneficial relationship that ends only with the death of either or both of them. The bond is such that British captains (and probably captains of other nations too) rarely marry, as they couldn't share themselves between a dragon ''and'' a spouse; when they want sex (or heirs) they have scandalously casual relationships with other aviators, treating it as matter-of-factly as the dragons do.
** It also potentially spans multiple generations. The larger Dragon breeds live quite a bit longer than humans (potentially for several centuries) and Dragons tend to take their death of their captain very hard. The most effective way of handling it is to replace the original captain with their child, it doesn't always work but the dragon will generally bond well with someone else who they feel shares their pain.
* Two races from ''Literature/CodexAlera'' have this as a power- the Marat (basically, to elves what neanderthals are to humans) can form a permanent empathic link with another living thing that lets them share in some of its abilities, while the titular [[HumansByAnyOtherName Alerans]] bond with the [[ElementalPowers elemental spirits]] called furies, allowing them to share in the furies' magic. [[spoiler: Marat ActionGirl Kitai gets the best of both worlds- bonded to an Aleran, she gets both a literal bound companion (and, ultimately, lover), in addition to gaining access to his magic once [[TheCallPutMeOnHold the Call finally gets him off hold.]] In return, he gains improved senses and endurance from her.]]
* The [[{{Dragaera}} Vlad Taltos]] novels play with this trope with Loiosh and Vlad, to the point of being a TakeThat at the Pern novels' fire-lizards.
--> '''"[[PhraseCatcher Shut up Loiosh.]]"'''
* In the Franchise/StarWarsExpandedUniverse, banthas (the big woolly, horned beasts of burden in Episode IV) were paired with young Tusken Raiders as companions for life. From the Star Wars wiki:
-->When a Tusken Raider child reached the age of seven he or she was ceremonially presented with a bantha of the same age as a companion for life. The youth learned to care for the creature, and the two built a mystical bond between Tusken and creature. When the bantha reached maturity, the male Tusken Raider would saddle his companion and ride it into the desert for adult initiation ceremonies. When Tuskens married, the couple's banthas would also mate, and when the Tusken pair had a son or daughter, their banthas tended to have a calf of the same sex.
-->The banthas of Tatooine were known to form deep bonds with the Tusken Raiders of the planet and often committed suicide if their riders were to die first. Banthas which died naturally were placed in vast graveyards, which held a kind of ceremonial reverence with the banthas.
** In ''Shatterpoint'', it's mentioned that some Korunnai form Force bonds with their akk dogs -- large, armored, reptilian wolf-bear-''things''. The bond meant the akk trusts its rider completely, is instantly obedient, and they can share senses and orders at the speed of thought, which lent the pair unmatched agility and reaction times. If the human partner dies, though, the akks generally become despondent and/or given to rages, and are usually put down.
* The daemons in Philip Pullman's ''Literature/HisDarkMaterials'' trilogy are a variant of this - bonded to their human because they are the physical embodiment of [[OurSoulsAreDifferent that person's soul]], and in the case of children, will change into different animals depending on their partner's emotional state. The daemon's gender is usually the opposite of the human's, exceptions being very rare indeed.
* In ''Literature/TheUnderlandChronicles'', the Underlander humans and the bats are the only species with this. [[spoiler: Until ''Gregor and the Code of Claw''.]]
* In Robert Heinlein's ''Literature/StarshipTroopers'', the human handlers of the Federation's K-9 units form this type of relationship with their Neodogs (basically, modified dogs with near-human intelligence). One of the recruiters Rico meets (a former K-9 handler) tells him that the bond between Neodog and handler has been said to be more intimate than many marriages. If a handler dies, SOP dictates that the Neodog is put out of its misery. If a Neodog dies, the handler is given lots of therapy, but is generally psychologically scarred for life.
* ''[[Literature/SpecialCircumstances Princess of Wands]]'': The cat revived in the last story of the book becomes this after it's revived by the protagonist, to the point of the husband commenting that the cat's acting like Barbara is creeping him out.
* ''Literature/TheSeventhTower'' has [[LivingShadow Shadowguards and Spiritshadows]], which the Chosen bind to their wills.
* ''ASongOfIceAndFire'' has the [[BadassFamily Stark]] children and their [[NobleWolf direwolves]] sharing a unique bond. To an extent other wargs found throughout the story share this with their chosen animal thralls. However, the direwolves and their owners appear to share a deeper connection as Jon notes that Ghost isn't merely a thrall, but actually a part of him.
* {{Literature/Dinotopia}} has a non-psychic version of this, most notably with Skybax riders. Only the rider can approach a Skybax, and the bond is a lifelong one once established. The novice rider must prove himself or herself to the Skybax to be considered for full apprenticeship. This often involves a climb up into the Forbbiden Mountains to the Tentpole of the Sky, a way of showing that the rider is not bound to the earth. The loss of a rider can send a Skybax into a state of feral aggression as with Windchaser. It can happen with humans and other species if they're born/hatched and raised together sometimes; this is known as 'nestfriends'.
* The novel ''The Wild Boy'' features a future where bear-like aliens have taken humans as a replacement for their bond-creatures, who went extinct. The Lindauzi call humans dogs, and raise them in kennels. The packs of free humans are wolves. Most often, a young Lindauza is given a human bond mate on his or her upright day, the first time he or she walks on two legs. If human and Lindauza are seperated, the Lindauza becomes ill and can die. There's something of an ability for each to sense the other when they're near.
* The novel ''Pegasus'' has this as the result of a spell performed to bind a human to a pegasus, which happens as a young person's right of passage. Most share a type of simple telepathic communication, but only the protagonist's pegasus speaks in actual language.
* In the Cordwainer Smith story "The Game of Rat and Dragon" humans bond with cats to fight {{Eldritch Abomination}}s living in hyperspace.
* The WebSerialNovel Literature/TheDragonWarsSaga has Heart Friends, who are born at the same moment as the Warrior they are bonded to. The [[ElementalPowers affinities]] of the warrior and their Heart Friend will match, although their genders will often be opposite.
* Lauren Beukes ''Zoo City'' plays with this. Animals are sent as by an unknown source to violent criminals who do however gain magic/psychic powers from the link, different with each pair. It's unclear whether the Animals are meant to act as consciences or provocateurs, this too seems to differ with each pairing but any attempt to part them causes enormous pain in the human and killing an Animal summons a destructive, demonic force called the Undertow.
* Barb, the heroine of John Ringo's ''SpecialCircumstances'' series has a black cat familiar named Lazarus, so named becaue she raised it from the dead. What makes it funny is that Barb is a devout Christian.
* Jane Yolen's ''Literature/PitDragonChronicles'' takes place on a hot, mostly-desert world that has a variety of warm-blooded pseudo-lizards with pneumaticized bones and feather-scales; the larger of which were named dragon-lizards, and eventually just dragons. They stand about 13 feet at the shoulder. Nearly extinct at the time the penal colony was dropped on the planet, the humans began breeding them and eventually developed a dragon-gladiator driven economy and society, boosted by offworld gambling interests. This arrangement continued until the galactic federation stepped in and overthrew the criminal-controlled gambling houses. The gladiatorial dragon combat, however, was eventually legalized (and taxed) by the galactic federation. The dragons exhibit high degrees of intelligence and a unique color-coded form of communication somewhere between empathic projection and telepathy, and the ability to form mental bonds with humans.
* In AndreNorton's ''[[Literature/{{Warlock}} Ordeal in Otherwhere]]'', Tsste for Charis and Taggi for Shann. Their mutal PsychicLink makes it a four-way deal.
* The titular creatures in the Literature/SpiritAnimals series are slightly more intelligent versions of regular animals summoned out of nowhere by drinking the magical Nectar of Ninani. Spirit animals grant their companions a wide variety of powers, as well as companionship.
[[/folder]]

[[folder: Live Action TV ]]
* The Trill from ''Franchise/StarTrek'' are a symbiotic race that live inside a [[RubberForeheadAlien humanoid host]]. The symbiote lives for centuries, but the host is subject to the same frailties as a normal human. In ''Series/StarTrekDeepSpaceNine'', Ben Sisko was an old friend of the Trill Dax, who had recently taken a new female host named Jadzia. The joke was Sisko had known Dax for years as old man named Curzon. Later on in the series Terry Farrell left the show, and the Dax symbiote passed on to a new female ([[{{Fanservice}} of course]]) host.
* The Goa'uld of ''Series/StargateSG1'' live inside humanoid hosts. They are more [[PuppeteerParasite parasitic]] than symbiotic, except for the Tokra who only accept willing hosts and only take control when necessary.
* The Riders in ''Series/KamenRiderRyuki'' (and by extension ''[[Series/KamenRiderDragonKnight Dragon Knight]]'') gain their powers by forming a bond with a Mirror Monster, turning it into a Contract Monster and providing them with [[CardBattleGame cards of power]] they use in combat. Contract Monsters have their own personalities and tend not to like Riders whose personality clashes with theirs or who avoid battle (since [[ImAHumanitarian they eat the essence of Mirror Monsters to survive]]). A particularly extreme example is Kamen Rider Ohja, who kills two Riders and forces contracts with their Monsters when they attack him seeking revenge. They openly despise the man and attack him when the opportunity comes up, but because of the contract they're forced to work for him.
* While this is supposed to be the case when one bonds with an Ultraman, it is only in ''Series/UltramanNexus'' where it is actually played out in great detail. Second dunamist Jun Himeya, for instance, often has to deal with the the injuries that he suffers when in Ultraman form whenever he reverts back to his human form. Conversely, there were episodes where Nexus can't fight effectively because of the injuries that Himeya suffered while in human form.\\\
And then there is the metafield that Nexus generates in order to fight monsters in, which is revealed to be [[spoiler:actually a representation of the human host's innards. Any damage that happens to the environment in the field also manifests in the body of the host.]] And you realize that [[spoiler:being an Ultraman is actually a death sentence.]] FridgeHorror indeed.
* It is heavily implied in ''Series/DoctorWho'' that [=TARDISes=] are bonded to their Time-Lords. The Doctor and the one he stole certainly have a psychic link, to the extent that her translation circuits will stop if he's unconscious. The reaction seems to put them very much on equal footing, as the episode "The Doctor's Wife" implies, with the TARDIS [[spoiler: saying that he's ''her'' Time Lord, who ''she'' stole on purpose.]]
* The makri, a spider-like creature in the season two finale of ''{{Sanctuary}}'' lives symbiotically with its chosen host, also establishing a telepathic link to another abnormal. Once it leaves the host's body, the host dies. Will proves to be a particularly good host as he doesn't die when the Makri leaves and he is still able to communicate with Kali, the other abnormal the Makri is connected with.
[[/folder]]

[[folder:Pinball]]
* This is a gameplay mechanic in ''Pinball/{{Avatar}},'' as the "Bond" rollovers allows the player to instantly recruit one of the Na'vi.
[[/folder]]

[[folder: Tabletop Games ]]
* {{GURPS}} has an entire mechanic devoted to these kind of characters (Allies with the summon-able enhancement).
* TabletopGame/DungeonsAndDragons has a quite a few ways of making these:
** The Kalashtar from {{Eberron}} are a race of humans descended from a group of humans who bonded with psychic entities called Quori. As the original bond members had children, the single Quori spirit was split along the lines of all descendants of the same sex.
** Beastmaster Rangers in TabletopGame/DungeonsAndDragons 4th Edition are defined by their bond with a particular beast that fights alongside them. They even gain a special ritual to bring it back from the dead.
** Similarly, the Shaman class has a bonded spirit companion, which acts as the nexus for a number of their ally-boosting abilities.
** This goes back as far as 1st Edition: the Magic-User spell ''Find Familar'' ... found a familiar, a small animal (cats and toads were among the possibilities). The familiar granted certain benefits (more HP, and special abilities depending on what the familiar was) to the Magic-User, but the downside was that if the familiar were ever killed (and they were pretty vulnerable), the Magic-User would suffer penalties.
* A ''TabletopGame/BlueRose'' character can have a rhydan (a sentient wolf, cat, horse or dolphin) as a Bond Creature by taking the Rhy-Bonded Feat. Since the rhydan species are themselves playable races, you can also play a rhydan character who has the Rhy-Bonded Feat and a ''human'' Bond Creature.
** Rhywolves, rhycats, rhyhorses and dolphins are only the rhydan that are available as PC races. Alternate Bond Creatures include drakes (which are small dragon-like creatures), winged cats, whales and griffons. Unicorns are also a potential, albeit rare example, and require a special feat named Unicorn-Bonded, which has much stricter requirements than Rhy-Bonded.
* The Summoner base class in ''TabletopGame/{{Pathfinder}}'' has the ability to summon and form a bond with a special outsider known as an eidolon, which gains power as the summoner gains levels and forms a bond with the summoner, and the two become linked over time, eventually even sharing a shard of the same soul.
* ''TabletopGame/{{Warhammer 40000}}'s'' Gyrinx is another pseudo-cat creature, whose temperament tends to match the owners. An obscure creature both in-setting and in published works, they tend to be drawn to [[PsychicPowers psykers]], and are particularly associated the the [[WitchSpecies Eldar]].
** Also present are the various creations and creatures serving as familiars to [[PsychicPowers psykers]]. These range from the weird (genecrafted two-headed cyborg eagles) to the macabre (Servo-Skulls, the skulls of loyal Imperial servants used after death to house a small anti-grav drive and various arcane technologies) and the downright disturbing (vat-grown mind-wiped babies with implanted anti-grav units and decorative wings serving as Cherubs). And that's before [[OurDemonsAreDifferent the servants of Chaos]] are even considered.
** Huron Blackheart, the Tyrant of Badab and leader of the traitorous astral claw has his 'Hamadrya' which is an unknown creature that is bonded to him and grants him mental powers.
[[/folder]]

[[folder: Video Games ]]
* The main characters of ''VideoGame/{{Drakengard}}'' have entered a Pact with another creature; ranging from a {{Golem}} to a [[OurDragonsAreDifferent Dragon]].
* The [[SummonMagic Aeons]] of ''VideoGame/FinalFantasyX'' demand that the Summoner enter an intense, soul-binding pact with them before yielding their power. [[GameplayAndStorySegregation Extends to the gameplay]], as Yuna's Aeons grow in strength depending on her own stats. [[spoiler: The bond is particularly strong between a Summoner and his or her final Aeon due to the relationship they had before the final Aeon's fayth was created. This bond is so strong that when [[BigBad Yu Yevon]] posseses the final Aeon, the psychic backlash from the bond being severed kills the Summoner. At the game's end, when Yuna must destroy the Aeons to prevent [[BigBad Yu Yevon]] from taking them over, banishing them causes her physical and emotional pain]].
** Guardian Forces in ''VideoGame/FinalFantasyVIII'' are explicitly "junctioned" onto the caster's mind, literally taking up space and even degrading the person's memories if junctioned for too long. On the other hand, they provide the ability to draw and cast para-magic.
** It should be noted that only the Aeons and Guardian Forces require this. [[VideoGame/FinalFantasyVI The]] [[VideoGame/FinalFantasyXII Espers]], [[VideoGame/FinalFantasyV the]] [[VideoGame/FinalFantasyIII Summoned]] [[VideoGame/FinalFantasyIV Monsters]], [[VideoGame/FinalFantasyIX Eidolons]] and [[VideoGame/FinalFantasyVII Red Materia]] will obey anyone who summons them; a few of the more powerful ones will battle the candidates to test their mettle, but there is no soul or mind-bonding involved. In ''VideoGame/FinalFantasyIV'', however, Summoners whose Eidolons are killed, die as well.
* This is a (if not THE) major ability of multiple classes in ''VideoGame/WorldOfWarcraft''. Warlocks get demon familiars by defeating them at the end of various quest chains; Hunters can tame wild animals; in both cases the pet levels with or slightly behind the character, gaining occasional new abilities. Both have a talent specialisation that focuses on this aspect, empowering both the master and the pet. Hunters have a somewhat more involved relation with their pets, having to care for their happiness (most commonly through feeding, with different animals liking different food), health and even a talent tree for the pet itself (though there are only 3 possible trees and the specific type of animal only determines one ability), while Warlocks can't even name their minions (the name is derived from the warlocks own name) and force them into doing their work, as evident by several of the demons responses, most notably the familiar and the felguard.
** Deathknights and Mages can also have permanent minions under certain conditions (ghoul and water elemental), but they don't have the same connection nor a consistent entity to serve them (ghouls get named randomly but change every time you summon a new one. Elementals get no name at all).
* In ''VideoGame/DwarfFortress'', cats have a tendency to behave like this... the downside is, they don't fight; apart from killing vermin, they're just {{Small Annoying Creature}}s.
* ''LostSoulsMUD'' has a number of guilds built around an empathic bonding faculty vaguely inspired by HisDarkMaterials.
* FM beings [[spoiler:and AM beings]] in ''MegaManStarForce''. The fusion is two way in that both parties can ''attempt'' to assume control. The main character's partner usually gives him control except for certain cooperative moves, hosts of villanous aliens either get consumed or try to fight for control (which apparently forms a composite mind), and one villain (in the anime) actually only controlled her host while the latter was asleep to sidestep the issue.
* Ra-Seru in ''VideoGame/LegendOfLegaia'' are symbiotic creatures that are immune to the effects of a mist that turns normal Seru (and usually their hosts) into mindless monsters. Seru can exist separately from a host, but their attachment grants powers and magic far beyond the normal.
* Pastamancers in ''KingdomOfLoathing'' can form a bond with certain pasta spirits, provided they have the correct item. Only one bond can be held at a time, though, and forming a new one severs the link to the old one forever.
* In ''VideoGame/PokemonRanger'', a {{Mon}} bonds with your character, lending you strength and help during a battle.
* In ''VideoGame/TheLegendOfZeldaSkywardSword'', the Skyloftians have their personal Loftwings, {{Giant Flyer}}s which come at their call and serve as transportation across the sky.
* In ''VideoGame/TheLegendOfZeldaOcarinaOfTime'', Kokiri children are implied to be bonded with fairies, which are represented as winged, glowing orbs.
[[/folder]]

[[folder: Webcomics]]
* In ''Webcomic/{{Magience}}'', [[OurDragonsAreDifferent Mute]] gives Rune a fragment of his soul, to share power and telepathy.
--> '''[[PlayerCharacter Rune]]:''' What does that mean for me, exactly?\\
'''Mute:''' Increased strength, resistance to disease and injury, [[MagicEater the ability to consume magic]]... and much more.
* The gods in ''Webcomic/{{Holystone}}''. They stick around with their "khen" until death, and then choose a new mortal to host their power.
[[/folder]]

[[folder: Western Animation ]]
* The Avatar in ''WesternAnimation/AvatarTheLastAirbender'' is implied to usually have some sort of creature that is called their animal guide. Aang has Appa and Roku had a dragon, both of which appear to be of about human level intelligence. Airbenders also traditionally bond with a sky bison when both are young and it is stated that it is a lifelong bond.
** Korra in the sequel series, ''WesternAnimation/TheLegendOfKorra'', has a Polar Bear/Dog hybrid called Naga.
* In the ''{{Futurama}}'' episode "The Thief Of Baghead", actor Langdon Cobb and his "dog" Pookie [[spoiler:are actually each one half of a quantum lichen, which like Earth lichens, consist of an algae and a fungus, except that they are linked psychically. Pookie, the fungal half, houses Cobb's ego, and grows in size whenever Cobb is filled with pride.]]
[[/folder]]

[[folder:Other]]
* [[LimyaaelsFantasyRants Limyaael]] calls these types of creatures [[http://limyaael.livejournal.com/180365.html telcoms]], for [[PsychicLink telepathic companion]].
[[/folder]]

[[folder: Myth & Religion ]]
* Among the Luiseno Indians of Southern UsefulNotes/{{California}}, part of a boy's initiation consisted of having visions of a particular animal (for example, a rattlesnake, bear, or deer). It was believed that the boy and the vision animal became bonded as friends or allies. After such visions, the boy would always treat his vision animal with great respect and it is believed that his animal could communicate with him and serve as his adviser.
[[/folder]]
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