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[[quoteright:349:[[Series/MightyMorphinPowerRangers http://static.tvtropes.org/pmwiki/pub/images/power-rangers_5833.jpg]]]]
[[caption-width-right:349:Above: [[Series/MightyMorphinPowerRangers The original five]] Franchise/PowerRangers.\\
Below: The original five Power Rangers...\\
[[TropeNamers and the Green one]].]]

Some series start out with a particular type of {{ensemble|s}}, with [[CastCalculus a certain number of characters and a defined role for each]]: a PowerTrio, for example, or a FiveManBand. Then in the second season, a mysterious new character appears, fighting the protagonists and antagonists alike! After many misunderstandings, the new character is revealed to be a good guy and joins the team.

Any new character that joins an established ensemble and knocks it out of one of the traditional categories (and possibly into another) is a Sixth Ranger. There may be more than one per team, with either several joining in succession, or pre-established pairs coming in at once. In a MagicalGirl show, it is not uncommon for the Sixth Ranger to be [[TheOneGuy the lead character's boyfriend]].

In some of the more extreme cases, a former BigBad, [[TheDragon Dragon]], or WildCard villain can take on this role after they have [[DefeatMeansFriendship been defeated]] or performed an independent HeelFaceTurn, and may or may not act as a secondary [[TheLancer Lancer]]. In MagicalGirl shows, this is usually the role the DarkMagicalGirl plays.

Their power and coolness is inversely proportional to the number of episodes since their début, since GoodIsDumb. Expect them to be [[CurbStompBattle single-handedly defeating enemies]] that the main team struggled against during their first appearance, falling in line as they become integrated into the group, then finally getting [[SoLastSeason overtaken]] by the original heroes. In fact, they almost invariably tend to become a magnet for TheWorfEffect as soon as the latest new BigBad shows up.

If the show doesn't look like it's going to [[StatusQuoIsGod change its status quo]], expect the Sixth Ranger to actually be the SixthRangerTraitor, or at the very least a GuestStarPartyMember if they have to leave [[ButNowIMustGo for whatever reason]]. Since most Sixth Rangers used to be {{loners|Are Freaks}}, they may serve as the TokenEvilTeammate. If a Sixth Ranger candidate does join the Ensemble, but the series is nearly over, the candidate is an EleventhHourRanger. When the team started as a PowerTrio and gets ''two'' Sixth Rangers to make a FiveManBand, they make ThreePlusTwo.

Compare HitchhikerHeroes and MagneticHero, where adding characters is the team's normal state. SailorEarth is a FanWork subtrope where the Sixth Ranger is an OriginalCharacter. Also see OneExtraMember, especially when the team's name [[TheNotableNumeral indicates the number of members]] and the Sixth Ranger doesn't force a change in the team's name.

Named for the introduction of the Green Ranger in the original ''Series/MightyMorphinPowerRangers'' as well as its Japanese counterpart Dragon Ranger in ''Series/KyoryuSentaiZyuranger''.

A common method for MerchandiseDriven works to add new characters to the cast--and the toy line.



[[folder:Trope Namer]]
* The name of this trope comes from the ''Franchise/SuperSentai''/''Franchise/PowerRangers'' franchise, which has a yearly tradition of adding at least one new member to the initial roster of heroes during the course of each series. Specifically, the tradition was started by ''Series/KyoryuSentaiZyuranger'' with the addition of Dragon Ranger, which was carried over by its adaptation ''Series/MightyMorphinPowerRangers'', where the introduction of the Green Ranger grabbed a lot of attention for the show and he became a BreakoutCharacter. Almost every show in both franchises since then has featured at least one extra member.
** Two ''Sentai'' shows prior to ''Zyuranger'' also had their own additional members before it became a regular thing. ''Series/JAKQDengekitai'' started out with a four-man team until the introduction of their new commander Big One (Sokichi Bamba), while the team in ''Series/ChoujuuSentaiLiveman'' originally consisted of [[PowerTrio three members]] before the [[ThreePlusTwo addition of Black Bison and Green Sai]].
** ''Series/HikariSentaiMaskman'' featured a sixth member for [[OneShotCharacter exactly one episode]] in the form of [=X1=] Mask, a warrior in green who volunteered for the Maskman project before the actual team was formed. Other shows had guest heroes who would assist the team for two or three episodes at most, but none of them ever became recurring characters (most notably ''Series/ChoudenshiBioman'' had a two-part storyline about a man who wanted to become the sixth member of Bioman, but ended up becoming a [[BrainwashedAndCrazy brainwashed]] [[MonsterOfTheWeek villain-of-the-week]], while ''Series/ChoujinSentaiJetman'' had a birdman warrior who fought alongside the Jetman team before he was killed off).
*** ''Jetman'' also has the distinction of having a sequel manga with a sixth member, Green Eagle, [[spoiler:to replace their dead member Black Condor.]]
** ''MMPR'' is also a key example of just how much PopularityPower a Sixth Ranger can have. The trope-naming character, Tommy Oliver, is a [[LongRunners mainstay]] in the Power Rangers setting, and he (and his actor, Jason David Frank) has been a regular for ''five'' seasons (two and a half of ''Mighty Morphin'', ''Zeo'', half of ''Turbo'', and ''Dino Thunder'') where the cast is now usually refreshed yearly. The only ones who even come close to such a record are ThoseTwoGuys Bulk and Skull (all three seasons of ''Mighty Morphin'', ''Zeo'', ''Turbo'', and ''in Space''; plus Bulk's semiregular appearances in ''Lost Galaxy'' and ''Samurai''). Big One is similarly popular after he completely stole the show in ''JAKQ'', becoming one of the three possible candidates for being the BigGood of every ''Sentai'' team in existence.
* ''Series/GekisouSentaiCarranger'' did not have an official sixth member; in fact, the show even parodied the concept with Radietta Fanbelt, a girl who dresses up as the White Racer, a self-appointed sixth member of the team. However, that did not stop ''Series/PowerRangersTurbo'' from revamping the VRV Master, a supporting character in ''Carranger'' who appeared for a few episodes, into the Phantom Ranger. Because his ''Carranger'' counterpart was not a Ranger, there are those who also don't consider the Phantom Ranger a true Ranger despite his much-increased role and similarity to his predecessor the Gold Ranger, and feel that the sixth ranger role goes to the Blue Senturion (who was based on Signalman, the official extra hero in ''Carranger'').
* Invocation of this trope also created an interesting situation for the production staff of the ''Series/PowerRangersLightspeedRescue''. They wanted to carry on the tradition of the sixth ranger, but there was none in ''Series/RescueSentaiGoGoFive'', the corresponding Super Sentai show.[[note]]The closest equivalent to a sixth ranger in ''Gogo-V'' was Jūma Hunter Zeek, an extraterrestrial warrior who assisted the team in a straight-to-video movie. He dies and passes on his powers to Sho's (Go Green) friend Kyoko, allowing her to transform into Zeek-Jeanne. However, Zeek was a one-shot character and Kyoko, despite being a recurring character, never used the Zeektector armor in the show.[[/note]] As a result, the staff created the Titanium Ranger from whole cloth and assigned him a robot that didn't belong to any of the rangers in ''[=GoGoFive=]''.
* The trope sometimes gets played with when a character has all the trappings of a Sixth Ranger, but doesn't join the team. The first Gold Ranger, Trey of Triforia, from ''[[Series/PowerRangersZeo Zeo]]'' and the aforementioned Phantom Ranger were {{Mysterious Protector}}s that only dropped in to give aid on occasion, while the [[Series/PowerRangersLostGalaxy Magna Defender]], the [[Series/PowerRangersTimeForce Quantum Ranger]], and [[Series/PowerRangersMegaforce Robo Knight]] were each an AloofAlly to their resident teams, actively clashing with the Rangers over their goals. Even these were open to a DoubleSubversion; both the Gold Ranger and Magna Defender passed on their powers to people who ''did'' join the respective teams, while the Quantum Ranger and Robo Knight eventually become a genuine allies.
* The concept really took hold when ''Series/NinpuuSentaiHurricaneger'' and ''Series/PowerRangersNinjaStorm'' reintroduced the ThreePlusTwo format last seen in ''Liveman'', allowing for the addition of more new members than in previous shows. The Gouraigers/Thunder Rangers were added first to fill out a five-man team before the introduction of an actual sixth member in the form of Shurikenger/the Green Samurai Ranger. Many subsequent seasons followed suit with more than one addition - ''Series/TokusouSentaiDekaranger''/''Series/PowerRangersSPD'' and ''Series/EngineSentaiGoOnger''/''Series/PowerRangersRPM'' even went up to seven full-time members each; ''Dekaranger''/''SPD'' with two single additions to a team of five and ''Go-onger''/''RPM'' starting off with three heroes and then adding two sets of two.
** ''Dekaranger'', in fact, went even further. "Deka" is Japanese slang for 'detective,' but since the 'deca-' prefix means ten of something, they went ahead and had ten Rangers total with the aforementioned seven full-time teammates and three {{One Shot Character}}s: [=DekaSwan=] (MissionControl getting to suit up for once), [=DekaBright=] (a DistaffCounterpart to [=DekaBreak=], one of the regulars), and [=DekaGold=] (a movie-exclusive character who barely gets to do an AssKickingPose before being blasted). ''SPD'' carried over the first two as the Cat Ranger and Nova Ranger, respectively.
** Several other series have since driven their total number of heroes up past six with One-Shots, {{Eleventh Hour Ranger}}s and the like. ''Series/MahouSentaiMagiranger''/''Series/PowerRangersMysticForce'', ''Series/SamuraiSentaiShinkenger''/''Series/PowerRangersSamurai'', ''Series/ShurikenSentaiNinninger'', and ''Series/DoubutsuSentaiZyuohger'' all added one or two {{Eleventh Hour Ranger}}s near the end of the series, plus ''Ninninger'' had two additional One-Shots. ''Series/PowerRangersJungleFury'' had five regulars plus three recurring Rangers (see below), and ''Series/ZyudenSentaiKyoryuger''/''Series/PowerRangersDinoCharge'' had six regulars plus three recurring ''and'' one at the Eleventh Hour.
* ''Series/BakuryuuSentaiAbaranger'' had not only two additions (Abare Black and Abare Killer), but [=AbaRed=] also got a SuperMode called Abare Max. The writers of ''Series/PowerRangersDinoThunder'', which was under production while ''Abaranger'' was starting to air in Japan, planned to turn Abare Max into an actual sixth team member known as the Triassic Ranger until Abare Max's debut episode revealed that it was just a powerup for the Red Ranger.
* ''Series/PowerRangersJungleFury'' added the three Spirit Rangers to the original roster of ThreePlusTwo from ''Series/JukenSentaiGekiranger''. ''Gekiranger'' already had three mentor characters who had weapons and mecha associated with them, so ''Jungle Fury'' eventually gave them Ranger suits as well in order to [[MerchandiseDriven create action figures of them]]. They're unique in that either the Rangers or the mentors can ''project'' them at a distance; made from spiritual energy like the Zords of the series, nobody even needs to be physically wearing the suits. The Rangers often summoned the Spirit Rangers from their own power to fight without the mentors needing to be present, and in the finale the mentors fought alongside ''their own Ranger forms,'' awesomely.
* ''Series/KaizokuSentaiGokaiger''/''[[Series/PowerRangersMegaforce Power Rangers Super Megaforce]]'', keeping with its team's premise of [[PowerCopying transforming into any of the previous Sentai or Ranger teams]], features a sixth Silver Ranger, who wields the Ranger Keys of fifteen previous "supplemental warriors."[[note]]Although he can use other Ranger Keys as well[[/note]] He has the ability to merge all of his Ranger Keys into the Gold Anchor Key, which allows him to transform into his "[[SuperMode Gold Mode]]," where he wears a golden armor adorned with the faces of said warriors.
** ''Gokaiger'' also has Ranger Keys for ten so-called "extra heroes," representing warriors beyond sixths, such as [[Series/TokusouSentaiDekaranger Deka Master, Deka Swan]] and [[Series/SamuraiSentaiShinkenger Lady Shinken Red]], or unusual allies, such as [[Series/GekisouSentaiCarranger Signalman]], [[Series/SeijuuSentaiGingaman Black Knight Hyuga]] and [[Series/GoGoSentaiBoukenger Zubaan]].
* ''Series/UchuSentaiKyuranger'' is a rather unique example. It actually ''starts'' with nine members (assembled over the first few episodes) and later adds three Sixths: Ryu Commander, Koguma Skyblue, and Houou Soldier. Played with in that Ryu Commander and Koguma Skyblue were introduced ''right after'' the core team was assembled,[[note]]For context, the main team fully came together in Episode 5, Ryu Commander was introduced in Episodes 8 and 9, and Koguma Skyblue debuted in Episode 10. In contrast, Houou Soldier didn't show up until Episode 21.[[/note]] so it's not really true to say they joined "late" compared to everyone else; plus Skyblue doesn't even have the special equipment/mecha/etc. that usually sets a Sixth apart from the rest.
* ''VideoGame/SuperSentaiBattleDiceO'' makes this into a playing feature. Players assemble a team of five Rangers, one robot, and an EX Card that can either be a one-round addition to the team or a team-wide special move. On the other hand, sixth / extra characters can still be part of the main five.

[[folder:Anime & Manga]]
* In ''Franchise/SailorMoon'', first Chibiusa, and later, Uranus, Neptune, Pluto, and Saturn, and still later, the addition of Chibichibimoon and the Starlights.
** The Outer Senshi provide egregious examples. They are somewhat xenophobic, but disappear for vague reasons whenever it'd be tricky to have overpowered characters the next season around. Whether or not they become weaker is moot, since the last season sees them as CannonFodder. Another example is Mamoru/Tuxedo Kamen, as he joins before any girl other than Usagi.
* Jokingly {{Deconstructed}} in ''Anime/SamuraiPizzaCats'', where a set of proud Sixth Rangers is snidely narrated as the "B-team", who fight villains that main crew are too busy or can't be bothered to fight.
* Done over and over in ''Anime/MermaidMelodyPichiPichiPitch''. Lucia, Hanon and Rina are a PowerTrio throughout most of the series, but the plot of the first season is dedicated to finding the other ''four'' girls needed for a whole team... [[spoiler:one of whom is a rogue fighting both the good and bad guys, while another is TheManBehindTheMan (well, the ''woman'' behind... oh, whatever).]]
* ''Manga/MyHeroAcademia'' has a hard time playing this trope straight, due to the fact that while there are five main characters, they never joined together in a FiveManBand, but through the arcs, various characters show signs of this, particularly Tsuyu, Mineta, Kirishima, Tokoyami and Yaoyorozu, who joined in various moments the main character's group to help them.
** It is played straight in [[spoiler: Bakugou]]'s case during the Hideout Raid Arc, in which after being rescued, they join the rest of the group.
* At least one every ''Franchise/{{Digimon}}'' season, the first of which is always heavily hinted at in the twenty-first episode but introduced an arc later. But it comes as the result of a HeelFaceTurn every time.
** Anime/DigimonAdventure: Hikari/Kari and Tailmon/Gatomon. Kari should've joined at the beginning with the other Digidestined, but was sick and missed the event when they all got sucked in together. As a result, her partner was abducted and raised by one of the later villains.
** Anime/DigimonAdventure02: Ken/Wormmon, the villain of the first arc before making a HeelFaceTurn, and joining as as TheAtoner.
** Anime/DigimonTamers: There could be ''seven'' Sixth Rangers if you want to be technical, but the WildCard turned [[TheDragon Dragon]] turned [[TheAtoner Atoner]] Impmon fits best if you want to look at just one. Ryo also has a good claim. He's the last to officially join the team and the only one on par in terms of power and competency with the core PowerTrio.
** Anime/DigimonFrontier: Koichi and The Spirits of Darkness, the twin brother of TheLancer who was trapped in a coma and corrupted by darkness initially.
** [[Anime/DigimonSavers Digimon Data Squad]]: Keenan/Falcomon, a wild child the core trio meets when they enter the digital world. It takes some time to get him to acknowledge them.
** Anime/DigimonXrosWars: Nene/Sparrowmon and Monitamon. (Joining Xros Heart)[[note]]In Episode 21. And expect more.[[/note]]
** Anime/DigimonAdventureTri: Meiko and Meikuumon. Unlike all the others, the series is only one-sixth of the way done by the time they're officially inducted, but the fact that the other eight have been a team for more than half a decade makes up for it.
** Anime/DigimonUniverseApplimonsters : [[spoiler: Yuujin and Offmon]].
* If you take it loosely, Hayate from ''Franchise/MagicalGirlLyricalNanoha''. Actually, since DefeatMeansFriendship, ''everyone'' in the show except Nanoha herself and Yuuno might count, with the good guys going from 2 people to a whole army (Hayate's, namely).
* Alice Maresato joins the band of survivors in ''Anime/HighschoolOfTheDead'' after being saved by Komuro and Hirano.
* ''Franchise/PrettyCure''
** Hikari in ''Anime/FutariWaPrettyCureMaxHeart'' attaches herself to the existing OddCouple.
** ''Anime/YesPrettyCure5GoGo'' brings out Milky Rose as the [[TheUntwist "mysterious"]] sixth member. Unusually for the trope, she keeps her power level throughout the series, still defeating the MonsterOfTheWeek on her own after the FiveManBand has resorted to using the CombinedEnergyAttack every week.
** ''Anime/FreshPrettyCure'' added a Fourth Ranger to the original PowerTrio: Cure Passion, a [[HeelFaceTurn reformed villainess]].
** ''Anime/HeartcatchPrettyCure'' added a Third Ranger of its own, Cure Sunshine, as well as a later ''fourth'' ranger, Cure Moonlight (although Moonlight was a Cure from the first episode [[BroughtDownToNormal who temporarily lost her powers]] then got better).
** ''Anime/SuitePrettyCure'' introduced [[MysteriousProtector Cure Muse]] early on, although she doesn't join the team, let alone reveal her identity [[spoiler:until much later in the series, where she does both]]. Later, it followed Fresh's example and added a reformed DarkMagicalGirl of its own: Cure Beat, [[spoiler:who joins the team before Cure Muse]].
** ''Anime/DokiDokiPrettyCure'' added a Fifth Ranger to the original quartet: Cure Ace, [[spoiler:a completely new character]] who acts as TheMentor.
** ''Anime/HappinessChargePrettyCure'' has Third Ranger Cure Honey and Fourth Ranger Cure Fortune. Like Moonlight and Muse, Fortune appears early in the series but doesn't join until later.
** ''Anime/GoPrincessPrettyCure'' adds [[spoiler:former [[EverythingsBetterWithPrincesses Princess Twilight (a.k.a. Princess Towa Akagi of the Hope Kingdom)]] as Cure Scarlet]] midway.
** ''Anime/MahoGirlsPrecure'' adds [[spoiler: the incarnation of Mother Rapapa, Haa-chan aka Hanami Kotoha as Cure Felice]].
** ''Anime/KiraKiraPrecureALaMode'' adds [[spoiler: Ciel Kirahoshi as Cure Parfait. Her secret? She's also a fairy.]]
* ''Manga/WeddingPeach'', originally featured a PowerTrio consisting of Wedding Peach, Angel Daisy, and Angel Lily. But in the second season, a "Sixth Ranger" is added in the form of Angel Salvia, a mysterious character with a modified costume who wields a sword, is much more mature and powerful, and frequently acts independently of the main trio.
* The ''Mother's Rosario'' arc of ''Anime/SwordArtOnline'' centers around the "Sleeping Knights", a tight-knit guild lead by Yuuki. While Asuna never officially joins the guild, she becomes their seventh ranger, joining them in a party and aiding them in their quest to clear a floor boss by themselves.
* ''Manga/GhostHunt'' has two examples of this. The first is Lin Koujo, who was injured in the first episode and then left out to heal until the end of episode three. The second is Yasuhara Osamu, who shows up in episode 14. These two characters also follow the 'power is inversely proportional to the number of episodes in' rule mentioned at the top of this page: Lin is easily the strongest character in the series [[spoiler: excluding TheHero Shibuya Kazuya, but he doesn't show his power until the final episode]], while Yasuhara has absolutely no power whatsoever and does all of the research for the group.
* In ''LightNovel/HaruhiSuzumiya'', Tsuruya, for the FiveManBand ''SOS-Brigade'' is very involved in their activities, but for some reason isn't recruited. That is, ''despite'' being a natural co-conspirator of Haruhi, since they are so similar. [[spoiler: She also appears to know that the SOS-Brigade isn't "normal", telling them to work on their {{masquerade}} more.]] She actually states that she prefers looking from outside, though other people on the outside sometimes considers her part of the group.
* Franchise/{{Gundam}} series:
** Schwarz Bruder and Allenby Beardsley from ''[[Anime/MobileFighterGGundam G Gundam]]''. ''VideoGame/SuperRobotWarsReversal'' ran with this idea towards Allenby, especially as the game seemed to have portrayed the Shuffle Alliance as a Super Sentai-esque team.
** Zechs from ''[[Anime/MobileSuitGundamWing Gundam Wing]]'' is the Sixth Ranger when he's on the Gundam Pilots' side and TheRival when he's not. Appropriately enough, his name is derived from the German word for "six", fitting in with the series' ThemeNaming.
** ''Anime/AfterWarGundamX'' has a traditional example in Ennil El. She's an enemy for most of the show thanks to a grudge against Garrod, but when she accidentally befriends BridgeBunny Toniya she starts on the road to a HeelFaceTurn. Then she joins the crew outright to help them fight the [=SRA=] and New Federation, and would have gotten a Gundam of her own had the series completed its full run.
** [[EleventhHourRanger Albeit he joined too late]], Yzak Joule is this to the Three Ships Alliance in ''[[Anime/MobileSuitGundamSEED Gundam SEED]]''.
** [[TagAlongKid Tag Along Guy]] Saji Crossroad and ActionGirl Marie Parfacy fills the role in ''[[Anime/MobileSuitGundam00 Gundam 00]]''. Graham Aker, formerly TheRival, becomes one in TheMovie.
* ''Anime/ThePrinceOfTennis'':
** Shitenhouji: Chitose Senri transferred to the school late (in fact, he was never supposed to even be part of the team, but the author changed this to accomodate the story, and in so doing pushed the team's vice-captain into almost complete irrelevancy), and in many ways remains a loner
** Hyoutei: Hiyoshi Wakashi is a loner, initially held as a reserve. He would ''like'' to change the status quo but is not able to do so. In some way he is the TokenEvilTeammate
** Rikkai: Kirihara Akaya is the lone second year among a team of third years. From the start he ''does'' aim to shake the status quo. He's actually simply assimilated.
** Seigaku: Echizen Ryoma starts out as a Sixth Ranger and becomes DesignatedHero
* Soldat J and King J-Der from ''Anime/GaoGaiGar'' fit pretty well. In his ''first appearance,'' he shows up out of nowhere and [[spoiler:massacres the three Primevals that had just annihilated the hero's main base and, it appeared at the time, the entire main cast aside from the hero himself.]] While Soldat J never truly joined the heroes, coinciding goals caused him to fight alongside them all the way to the end of the series and OVA. Interestingly, while the main protagonists did somewhat catch up to him, he was still more powerful than any other major character in the series except for the main character himself.
* ''Anime/{{Voltron}}'' has two that could be considered sixth rangers : Either Princess Fala/Allura or Sven/The Shirogane Brothers. In the twenty episode second season of Voltron, made not from ''Anime/GoLion'' but new animation, Sven actually gets one last chance to pilot Blue Lion before the second finale.
* The ''Anime/{{Slayers}}'' TV series features frequently this trope:
** At the beginning of the series, Lina and Gourry form a duo and Zelgadis is an enemy, then later fighting against both sides, and finally settles in as an ally.
** By the beginning of the second season, they've established themselves as a standard four-man RPG team, but Martina keeps pursuing them and trying to curse Lina, before finally more-or-less joining them near Katahto.
** Borderline example: Filia attacks the team at the beginning of the third season, but she's joined by the second episode.
** If you count only his third-season appearances, Xellos starts out pranking them, then joins them to fight the apparent villain, then switches sides a half-dozen times before finally joining them for the last couple of episodes.
* In the ''Hourglass of Falces'' manga, the main four from the anime are also joined by Luke and Milina, who serve as Zelgadis and Amelia's replacements in the second half of the novels. Luke acts as Lina's [[TheLancer Lancer]] in this story, thus the snarky, well-rounded fighter Milina fits this trope.
* ''Anime/{{Guyver}}'', being an homage to ''Franchise/KamenRider'' and ''Series/{{Kikaider}}'', has Guyver III in the role of the Second Rider (to those who don't know, Guyver II was the EvilCounterpart).
* ''Manga/OnePiece'' essentially works this way, even though Luffy didn't have a FiveManBand established since the beginning. However, by the time he went through Reverse Mountain, he had TheHero, TheLancer, TheBigGuy, TheSmartGuy and TheChick. Vivi joined after this, and for a while was the Sixth Ranger until she left again. You could say all the TrueCompanions that joined him after that are {{Sixth Ranger}}s, though, including her.
* Kagura from Manga/AzumangaDaioh. She starts out as a rival in another class, but joins the group in the second year, as part of a plan by Yukari to win the Athletics Festival. Kaorin to an extent, too.
* ''Anime/{{Nichijou}}'':
** Nano is a major character from the start of the series, but never interacts with the other leads. It isn't until halfway through the series that she actually starts attending school and joins the group. [[EvolvingCredits Accordingly, the credits change to reflect this]].
** Also Fe-chan, Weboshi, and Mihoshi. The first two were present in the background, but didn't become recurring characters until about halfway though the series' run, while Mihoshi doesn't even show up until episode 18. Like Nano, the three girls were added to the opening credits right around the time they joined the cast.
* ''Manga/LuckyStar'' had a whole slew of sixth rangers that joined the cast about halfway through the show's 24-episode run. Misao and Ayano start off as [[LivingProp Living Props]] before eventually becoming recurring characters, while Yutaka, Minami, Patty, and Hiyori don't show up until the new school year starts. Humorously, Misao {{Lampshades}} this by pointing out that she and Ayano [[RememberTheNewGuy had been there from the beginning]], but were simply OutOfFocus.
* ''Anime/{{Eyeshield 21}}'':
** Taki, who becomes the tight end for the Devil Bats. He joins during the middle of the Death March through America and is eventually Flanderized into becoming a huge idiot and an extra person to make short passes to. Only on one instance was he a winning factor for the team.
** Musashi even more so. His existence has been alluded to since chapter 1, first appeared in volume 5 as a nameless contractor, and had his identity revealed in volume 7. He appears to be a {{jerkass}} at first, but it's soon revealed to be a facade and he's actually a really good guy. He doesn't join the team till volume 18, and his importance to the team only being hyped up during his first two match. Afterward, we rarely even get to see his kicks and his role in the story significantly decreases.
* ''Manga/AxisPowersHetalia'' has Canada, to the point that few ever notices him with the ones that do mistaking him for America.
* The Blue Knight / [[spoiler:Masaya Aoyama]] was this to the Mews in ''Manga/TokyoMewMew''. Mew Berry from the sequel was also very much like this.
* Definitely Kotaro from ''Manga/MahouSenseiNegima'', who started out as an enemy, but thanks to DefeatMeansFriendship, turned into TheRival and eventually this. Though in a series where LoadsAndLoadsOfCharacters are ''constantly'' being added to the main cast, several more can fit this.
* Ikki from ''Manga/SaintSeiya'' is the quintessential Sixth Ranger... despite being the fifth member of the core team.
* ''Anime/YuGiOh5Ds'' had [[spoiler:Crow]] become the Fifth Signer, while [[spoiler:Rua/Leo]] became [[spoiler:the Sixth Signer]] with about a dozen episodes left to the end of the series, making the latter more of an EleventhHourRanger.
* ''Anime/MartianSuccessorNadesico'' had LoadsAndLoadsOfCharacters as it was, but continued to pick up more as the series progressed. First was the three spare Aestivalis pilots, Ryoko, Izumi, and Hikaru. After they [[spoiler: returned to Earth]], they reluctantly allowed military-appointed leader Admiral Munatake, the company chairman's secretary Erina, and fifth pilot Akatsuke Nagare [[spoiler: the chairman himself]]. Finally [[spoiler: after the exiled crew's hijacking of the Nadesico, the Jovian pilot Shiratori briefly joined]].
* Hana in the 4th season of ''Anime/OjamajoDoremi''. She transformed from her baby form to her human form to become the same age as the girls. Before that, Onpu was the Sixth Ranger to the original PowerTrio, though she was fully integrated into the team in ''Sharp''.
%%* [[AmbiguousGender Crona]] from ''Manga/SoulEater'' could be considered this after his/her HeelFaceTurn (Please explain if the character REALLY fits. Saying "could be considered" doesn't help at all since Examples Are Not Arguable).
* ''Franchise/LupinIII'' started out with the main cast being just [[WithAFriendAndAStranger Lupin's friend Jigen and the stranger Fujiko.]] The samurai Goemon was added later on because the creator thought there should be a clearly Japanese character. True to the trope's usual form, he was a bad guy at first - an assassin sent to kill Lupin - but they soon became allies instead.
* ''Anime/CyberTeamInAkihabara'' started with Hibari, Suzume, and Tsugumi as a PowerTrio. About halfway in, Kamome shows up and acts antagonistic, but forces her way into the team somewhat awkwardly. [[spoiler:In the second half, Tsubame is introduced as a villain and eventually [[HeelFaceTurn Heel Face Turns]] close to the end of the series.]]
* ''Manga/FairyTail'' has Gajeel, who started off as an EvilCounterpart to [[TheHero Natsu]] until he joined the guild, whereupon he became TheRival, and is still not trusted by some members of the guild. [[spoiler: He is, however, a DoubleAgent for [[BigGood Makarov]] and takes on the tough job of spying on Raven Tail for him]]. There's also Wendy Marvel and her sidekick Carla, who fills the temporary 6th character spot in their intro arc, but proceeded to become a permanent addition to both the guild, and the usual focused team of Natsu/Lucy/Gray/Erza/Happy.
* ''Anime/YuGiOh'':
** Bakura, moreso in [[Manga/YuGiOh the manga]] than the anime, who joins the core four of Yugi, Jonouchi, Honda, and Anzu. He notably has this role for most of the manga, while in the anime it only really lasts for the Duelist Kingdom arc. If anything, for the majority of the anime, Kaiba actually somewhat fills the role moreso than anyone else.
** Despite having been there from the start, Pharaoh Atem himself is this to an extent; he and Yugi only really identify as entirely separate characters to each other. Ishizu and all the major antagonists (except Pegasus) act as if there is only Atem, while everyone else acts as if there is only Yugi.
* ''Anime/PuellaMagiMadokaMagica [[Anime/PuellaMagiMadokaMagicaTheMovieRebellion The Movie: Rebellion]]'' will introduce a new MagicalGirl named Nagisa Momoe, who is clearly meant to evoke this trope. But they don't exactly play it straight. [[spoiler: For one thing, she spends most of the film as TeamPet "Bebe", which is [[YouDontLookLikeYou a slightly altered version]] of Nagisa's witch form Charlotte.]]
** The online RPG game places this situation on Homura in regards to the pre-existing Magical Girl team of Madoka, Mami, Sayaka, Kyoko, and the PlayerCharacter. The combination of Homura's newness to the rest of the group (beyond just her NewTransferStudent status), her unsocialbility and aloofness, and her choice of [[MoreDakka firearms and explosives]] presenting an ever-present risk of UnfriendlyFire on melee-fighters Sayaka and Kyoko make her integration into the group difficult - the later chapters of the main storyline place more focus on this.
* Renji Abarai is the most obvious example in ''Manga/{{Bleach}}'', becoming committed to fighting alongside sworn enemy Ichigo and his close pals after getting defeated by him in the Soul Society, and succeeding in rescuing Rukia together. Renji's still an abrasive guy but likes chilling around with Ichigo whenever nearby, especially in the anime's numerous filler arcs.
* ''Anime/{{Pokemon}}'' has a whole horde of recurring secondary characters, including the Pokémon themselves, who join the main party for specific episodes or arcs. Sometimes, they will be counterparts to characters from the games, but they're just as often {{Canon Foreigner}}s. Misty, Brock, May and Dawn also act somewhat like Sixth Rangers in their [[TheBusCameBack return appearances]]. The ''Sun and Moon'' series has an odd variation where the protagonist is the Sixth Ranger, due to Ash meeting up with an already existent FiveManBand (Pikachu is not the Sixth Ranger of their Pokemon however, as Lillie would not obtain her starter Pokemon, Snowy until after they had met).
* ''Manga/{{Berserk}}'': Post-Eclipse, Guts forms a loose FiveManBand with [[TheLancer Schierke]], [[TheSmartGuy Serpico]], [[TheChick Farnese]], and [[TagalongKid Isidro]], with the elves as {{Team Pet}}s and Casca as a rather tragic example of TheLoad. Then their journey takes them out to sea, and Farnese [[ContrivedCoincidence turns out]] to have a fiancée with a CoolShip. Enter Rodrick, the Sixth Ranger.
* ''Manga/{{JojosBizarreAdventure}}'': Iggy from Stardust Crusaders joins the main characters' group on their journey to defeat DIO halfway into part 3, serving as the Sixth Ranger in Joseph, Jotaro, Polnareff, Kakyoin and Avdol's pre-existing team.
* ''Manga/SgtFrog'': Dororo and Angol Mois like to trade places being this and TheChick, depending on the episode.
** In the anime, Joriri joins the Keroro Platoon officially during an episode of the 6th season. However, because StatusQuoIsGod, it turns out there was a mistake and he leaves... That event was still referenced afterwards though and he continued to be a minor recurring character for the anime.
** The manga introduced an actual sixth ranger in chapter 174. [[spoiler: The "Second Keroro Platoon", a young recruit also named "Keroro", whose Keron Star gives him [[AllYourPowersCombined alternate modes based on the data of each platoon member]]. He befriends a human child called Tomosu, who's an occult fan and member of an occult club, similar to Fuyuki, but he's younger and actually a Fuyuki fan himself.]]
* Karin first appears in episode 3 of ''Anime/YukiYunaIsAHero''. The rest of the [[MagicalGirl Heroes]] had been friends for months and had been Heroes for a few weeks before Karin popped up. She is TheAce of the group, as she had been training for years to be a Hero. The Taisha told Karin to supervise the others. She acts [[SmugSuper uppity]] due to the others being less experienced than her, but is mostly {{tsundere}} and is heavily implied to have a InferioritySuperiorityComplex.
* In ''Animation/FloweringHeart'', the mysterious, aloof Syuel ends up joining the team eventually.

[[folder:Card Games]]
* ''TabletopGame/MagicTheGathering'' has the 5 colors that represent 1/5 of the universe each, as well as artifacts that can do mostly the same things, [[MasterOfNone though not as well.]] True to the trope, artifacts were almost nonexistent in Alpha, but have become more important (and useful) over time.

[[folder:Comic Books]]
* Franchise/XMen:
** Back when the Comicbook/XMen were a Five-Man Band, Mimic was the first new student at Xavier's (also the first non-mutant X-Man). He's been a low-level criminal since leaving the team (a waste of potential after seeing his Exiles counterpart in action).
** When the original X-Men "graduate" to make room for the next team, the lineup remains fairly constant...Wolverine, Storm, Nightcrawler, Colossus, and ''Comicbook/{{Cyclops}}'', with Banshee or ''Comicbook/JeanGrey'' "Phoenix" rounding out the squad on occasions...until after the Dark Phoenix Saga, when the team picks up TagalongKid Kitty "Sprite" Pryde. In an interesting inversion, she started off without much combat effectiveness, and [[TookALevelInBadass took several levels in badass]] as her time with the team progressed.
* ''Comicbook/{{Runaways}}'':
** Topher is set up a little ''too'' obviously as one of these, and then reveals himself as a SixthRangerTraitor in short order.
** Played straight with Victor Mancha, who is the first member to join the team after the initial MythArc with the Pride. He is followed by Xavin and, later still, Klara Prast.
* In the ''ComicBook/{{Supergirl}}'' story arc ''Comicbook/RedDaughterOfKrypton'', Supergirl joins [[Franchise/GreenLantern Guy Gardner's Red Lanterns]]. A late addition, she is the youngest and smallest of the group, and she's also the most powerful by far due to her [[Franchise/{{Superman}} Kryptonian natural powers]].
* ''Franchise/TeenageMutantNinjaTurtles'':
** In the original Mirage series (and most of the adaptations) this role is usually filled by Casey Jones who first met the Turtles after getting into a fight with Raphael when the latter stopped him from almost beating some street hoods to death.
** About a fourth of the the way into its run, ''ComicBook/TeenageMutantNinjaTurtlesAdventures'', the Archie-published book based on the [[WesternAnimation/TeenageMutantNinjaTurtles1987 first animated series]] introduced Ninjara, a ninja foxwoman, as an antagonist. A few issues later, she joins the turtles and becomes a series regular, appearing in every story since.
* The ComicBook/FantasticFour have had a few extras over the years—Johnny's ex-wife Lyja, Ben's girlfriend Sharon Ventura, the time displaced teenage version of Valeria Richards, and others; not counting substitute members who have filled in temporary vacancies in the team like Crystal, ComicBook/{{Luke Cage|HeroForHire}}, ComicBook/SheHulk, and the ComicBook/BlackPanther.
* ComicBook/GreenArrow was the first new recruit to join the ''[[ComicBook/JusticeLeagueOfAmerica Justice League]]'' back in the 60's. As a MythologyGag, his son [[AffirmativeActionLegacy Connor Hawke]] was the first new recruit to join the reformed League during Creator/GrantMorrison's run.
* ComicBook/CaptainAmerica, who joined ''Comicbook/TheAvengers'' in the fourth issue of the series, and ended up becoming TheHero of the team.
* ''ComicBook/LesLegendaires'' got two sixth rangers so far:
** The first was Shun-Day, a {{Ninja}} ActionGirl apprentice who temporary joined the group in order to achieve her formation. [[spoiler:She's eventually revealed to be a SixthRangerTraitor working as TheMole for the EvilSorcerer [[TheChessmaster Skroa]], though she [[BecomingTheMask eventually develops an actual bound with the Legendaries]] and ends up helping them defeating her "father".]]
** The second was [[DarkActionGirl Tenebris]], [[BigBad Darkhell]]'s daughter, who joined the group [[LoveRedeems in order to protect her love interest]] Razzia. Though her team-up with them was initially somehow intended to be temporary, she ends up joining them for real [[spoiler:after Danael was possessed by GodOfEvil [[BiggerBad Anathos]] and became the new villain]]. Ironically enough, [[spoiler:[[TheDarkChick Shimy]] was so much expecting Tenebris to be a SixthRangerTraitor that she was willing to kill her in order to prevent it from happening, when in fact it turned out Tenebris remained loyal to them.]]
* ''ComicBook/ArchieComicsSonicTheHedgehog'' has had a number of Sixth Rangers since its inception: Bunnie Rabbot (who ''wasn't'' part of the team here), Dulcy the Dragon, Tails and Amy Rose. The ContinuityReboot altered things so that Big the Cat and Cream and Cheese are now Freedom Fighters and the backstory revealed that Sonic and Tails were the first Sixth Rangers in the Freedom Fighters.
* Marty Miller from ''ComicBook/{{Circles}}'' a is a late addition who joins the FiveManBand at only the beginning of the story. He is also the youngest and most inexperienced of the group, so he doubles as an AudienceSurrogate.
* Aqualad (the Kaldur'ahm version) is this in ''ComicBook/TeenTitansRebirth'', complete with a "Next: The Sixth Titan" preview.

[[folder:Comic Strips]]
* In ''ComicStrip/{{Mafalda}}'' both Miguelito (who turned the FourTemperamentEnsemble into a FiveManBand) and Libertad would count, but the latter is a better example.
* In the British AnthologyComic ''ComicBook/TheBeano'', in the ''Super School'' strip ComicStrip/{{Banana|man}}girl joins the original four super-powered schoolchildren after the strip has already been running for a few weeks.

[[folder:Fan Works]]
* ''BatmanBeyondRevisited'': [[spoiler:Inque]].
* ''Manga/{{Evangelion 303}}'': [[AcePilot Mari]] [[BloodKnight Makinami]] and her weapons officer [[OriginalCharacter Kelly]] joined [[TheSquad the "Evangelion" squad]] at the end of the Part 2, and during her debut onscreen [[OldSchoolDogFight fight]] Mari matched skills with [[FieryRedhead Asuka]], [[AcePilot the top pilot of the squad]].
* [[spoiler:Tsuruya]] was officially recruited into the SOS Brigade in ''Fanfic/KyonBigDamnHero'', as well as the unnamed girl from Dissociation.
* ''FanFic/PonyPOVSeries'':
** [[spoiler:Trixie]] serves this role, [[spoiler:being a second Element of Magic and performing a HeelFaceTurn when Twilight saved her from her Discording and an EnemyWithin named Loneliness, joining the group afterwards. She proves to be a powerful ally, not only sharing Twilight's PowerCopying ability, but by being a cunning GuileHeroine who makes good use of her weather generating abilities.]]
** [[spoiler: Fluttercruel]] also ends up joining the team, after [[spoiler: she pulls a HeelFaceTurn, nearly performs a HeroicSacrifice to defeat Nightmare Whisper, is discovered to be a second Element of Kindness, and she and Fluttershy are given the ability to swap control of [[SharingABody their body]] by Celestia.]]
** In the [[BadFuture Dark World]] arc, [[MamaBear Ditzy Doo/Derpy Hooves]], [[CheerfulChild Apple Pie]], and [[TookALevelInBadass Spike]] join the [[HeelFaceTurn redeemed]] members of the Mane Cast as the new Elements of Loyalty, Laughter, and Generosity, respectfully.
** Also in Dark World, there's a villainous example, as [[spoiler: Discord's sister]] [[PhysicalGod Rancor]] joins up with the villains just as the Elements of Harmony start their campaign to liberate Equestria from Discord. [[spoiler: Becomes a SixthRangerTraitor, as it turns out she was only bidding her time until she could steal Destruction's power from Discord for herself.]]
** Rainbow Dash gets demoted to this -- unlike the other Mane Six, she goes into a DeepSleep after her redemption in order to recover spiritually from the trauma of everything Discord put her through. As such, she doesn't join in the fight against Discord's forces until she shows up [[BigDamnHeroes in time]] to save the others from [[spoiler: [[OneWingedAngel Odyne!]][[TheDragon Cruelty]]]]. Likewise Pinkie Pie, who isn't redeemed until close to the end of the arc [[spoiler: and dies soon after anyway.]]
** Shining Armor's side story has a rather literal example -- Cadence has [[TheMedic Private Garnet]] reassigned to Misfit Actual (Shining's unit) not just for her medical skills, but because regulations dictate that units need to have six members.
** [[spoiler: Silver Spoon]] ends up joining the Cutie Mark Crusaders, and is rather [[TheDeterminator determined]] to make former friend [[spoiler: Diamond Tiara]] join them too.
* On the subject of ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' fanworks, its pretty common to depict background filly Dinky (who is usually depicted as the daughter of MemeticBystander Derpy Hooves) as the Fourth Cutie Mark Crusader. Similarly, it's also quite common to have Trixie ultimately become a seventh member of the [[FanNickname Mane Six]].
* In the ''FanFic/TamersForeverSeries'' [[Anime/DigimonAdventure Takeru Takaishi]] becomes this during ''Silent Sorrow''.
* ''FanFic/RainboomsAndRoyalty'': Zecora joins the Mane Six and guides them through the Everfree forest to find the Elements of Harmony. [[spoiler: Ditzy Doo, after being freed from Nightmare Moon's [[BrainwashedAndCrazy mind control]], likewise joins during the FinalBattle.]]
** Zecora seems set up to take the role again in ''Hot Heads, Cold Hearts, Nerves of Steel''.
* Fanfic/FateRevelationOnline: Shirou is explicitly nicknamed this, due to his rampant heroism in the early days of SAO. He even gets an appropriate white jumpsuit and mask made for him.
* The MTM from Fanfic/{{the Calvinverse}} was with Calvin from the start, but (as of the ''Fanfic/CalvinAndHobbesTheSeries'' episode "An MTM Episode") gained speech and started becoming more of his own character, making him this.
* Many ''WesternAnimation/DannyPhantom'' fics, such as the ''FanFic/FacingTheFutureSeries'', has [[OppositeSexClone Danielle]] as this for Team Phantom.
* Breeze Rider from ''WebAnimation/DusksDawn'' is generally comic relief throughout the episode.
* Fanfic/EquestriasFirstHuman:[[spoiler: When Connor permanently ends up in Equestria, he is reincarnated as a pony, and joins the Mane Cast in it and the rest of the sequels. While the sequels are written from his perspective, they take place during canon events of the show which tend to focus on the Mane 6, and thus he qualifies.]]
* Copy Cat in ''FanFic/TheEndOfEnds'', though in the sense of him being a GuestStarPartyMember. [[spoiler: He gets promoted to a more permanent position after Beast Boy kicks it]].
* Common in ''WesternAnimation/MiraculousLadybug'' fanfiction, as there are at least three Miraculous still inactive, plus one whose holder is probably due for retirement. Typical candidates for these stories are Nino becoming the Turtle Miraculous holder ([[spoiler:soon to be canon]]) and the Guardian when Master Fu retires (or [[spoiler:dies]], as in ''Fanfic/SerendipitousFate''), Chloe getting the Bee Miraculous ([[spoiler:also soon to be canon]]) and the Fox Miraculous going to either Lila, Nathanael or Alya ([[spoiler:the latter has happened temporarily in Season 2, no word yet if it'll be permanent in the future]]).
* ''FanFic/YinAndYangSeries'': Kirere, after the first story, ends up becoming this for the [[Manga/SgtFrog Keroro Platoon]].
* ''Fanfic/TheNewAdventuresOfInvaderZim'' opens with Zim getting a new minion in the form of the [[OurVampiresAreDifferent vampire]] Norlock. Later, Dib is assigned reinforcements from the Swollen Eyeballs in the form of the twins Steve and Viera. Later still, Tenn arrives on Earth, and the Tallest form her to team up with Tak.

[[folder:Films -- Animation]]
* ''WesternAnimation/KungFuPanda'': After Po proves himself as the true Dragon Warrior in the first film, he regularly fights with the Furious Five. However, considering he is still unsure of himself to a certain degree, he defers to Tigress as leader and is content to keep the relationship known as "The Furious Five and the Dragon Warrior."

[[folder:Films -- Live-Action]]
* ''Franchise/StarWars'': Luke, Han, and Leia form a PowerTrio in the first film, with Chewbacca as a SatelliteCharacter attached to Han and Obi-Wan to Luke as TheMentor, and the droids as PluckyComicRelief. In ''Film/TheEmpireStrikesBack'', Lando Calrissian joins as the Sixth Ranger. He double-crosses the heroes and Chewbacca nearly strangles him to death. However, he was just trying to protect Cloud City, and he eventually pulls a HeelFaceTurn to join the Rebellion.
* Captain Barbossa of ''Franchise/PiratesOfTheCaribbean'', who becomes a good guy in ''[[Film/PiratesOfTheCaribbeanAtWorldsEnd At World's End]]'' (until the end, when he steals the ''Black Pearl'' from Jack...again). A more minor example might be Jack Sparrow, who joins up with Will Turner after them being quite at odds.
* ''Film/{{Stagecoach}}'': The Ringo Kid. John Wayne's character in the classic western is introduced after the other characters and joins them later in the story. With the characters opposed to each other, he acts as a catalyst to bring the other characters into reconciliation.
* The Film/{{GhostBusters|1984}} where originally a PowerTrio in formation, then Winston Zeddmore joins immediately after the Montage. In [[Film/GhostbustersII the sequel]] he also oddly appears in only 1 Pre-montage scene.
* ''Film/TransformersDarkOfTheMoon'' - After the Autobots learn of an Autobot starship hidden on the moon's dark side, they go up to retrieve its captain, Sentinel Prime. Sentinel then joins the Autobots at NEST, [[spoiler: before revealing himself to be a [[SixthRangerTraitor traitor]]. Unknown to the others, he had struck a deal with Megatron near the war's end to work together rebuilding Cybertron. He then murders Ironhide, before taking the Space Bridge pillars and meeting up with Megatron, with the intention of bringing Cybertron close to Earth, and using humanity to rebuild Cybertron as a slave labor force.]]
* In ''[[Film/TheMagnificentSeven1960 The Magnificent Seven]]'' there is a bit of this going on in two ways. The character Chico is viewed as this by the other characters, although the character Lee, played by Robert Vaughn, unlike the others, does not have a counterpart in the ''Film/SevenSamurai'' and was created specifically for the film, making him also a Sixth Ranger.
* Agent Clint Barton[=/=]Comicbook/{{Hawkeye}} in ''Film/{{The Avengers|2012}}''. He's absent for a good chunk of the film due to being [[spoiler:[[BrainwashedAndCrazy mind-controlled]] by [[BigBad Loki]],]] but joins up just in time to help the heroes kick ass in the climax. Appropriately, he's a dark and brooding type, with incredible ImprobableAimingSkills.
* [[spoiler:[[HeelFaceTurn Storm Shadow]]]] from ''Film/GIJoeRetaliation''.
* Emma Frost to Magneto's original Brotherhood in ''Film/XMenFirstClass''.
* In ''Film/JusticeLeague'', Franchise/{{Batman}} (TheLeader) and Franchise/{{Wonder Woman}} (TheLancer) assemble the titular league, with ComicBook/{{Aquaman}} (TheBigGuy), ComicBook/{{The Flash}} (TheChick), and ComicBook/{{Cyborg}} (TheSmartGuy) rounding out the FiveManBand. They are joined at the last minute by [[spoiler: Franchise/{{Superman}}, recently resurrected]].

* David from ''Literature/{{Animorphs}}'' is the straight example, identified on book covers as the "Sixth Animorph", [[spoiler: though he is actually a SixthRangerTraitor.]] Ax is the more commonly accepted Sixth Ranger: he and the original five initially consider themselves "five kids and an Andalite," but by the final book, Ax refers to the group as "We, the Animorphs," when speaking to Jake.
* ''Literature/HarryPotter'':
** After the events of ''Literature/HarryPotterAndThePrisonerOfAzkaban'', [[spoiler:Sirius Black]] largely fills this role in the fourth and fifth books, becoming Harry's go-to guy when in need of advice or moral support.
** Starting in ''Literature/HarryPotterAndTheOrderOfThePhoenix'', Neville, Luna, and Ginny (all of whom but Luna had been recurring characters before) began to function as a sort of auxiliary trio to the main characters.
** Averted in ''Literature/HarryPotterAndTheDeathlyHallows''. Remus Lupin tries to become this by offering the Trio to join them on their quest to defeat Voldemort, but Harry refuses the offer when he discovers Lupin is trying to escape the responsibilities of being a good husband and father, by leaving the pregnant Tonks to her fate. Since Harry lost his parents when they gave their live to save him, Harry really dislikes it when someone tries to abandon his or her responsibility as a parent.
%%* [[spoiler: The Madrigals]] in the ''Literature/The39Clues''.
%%* Amanda in ''Literature/KingdomKeepers''.
* The Franchise/StarWarsExpandedUniverse occasionally does this. Most obvious is Zekk from ''Literature/YoungJediKnights''. Zekk even looks like Tommy in the art.
* Thomas from ''{{Literature/Malevil}}''. He's the one member of the UsefulNotes/WorldWarIII survivors that wasn't part of the group from their youth. He's also college educated, don't speak the local patois, and an atheist without a religious upbringing.
* Literature/TrappedOnDraconica: [[spoiler: Taurok]] joins the heroes in time for the climax.
* ''Literature/TheBabySittersClub'' has Dawn, Mallory, Jessi and Abby.
* ''Literature/TheGoodTheBadAndTheMediochre'' has Danny, who may also count as TheTeamBenefactor and TheDriver since he only turns up when the heroes need someone with a van and an above-average knowledge of the Scottish road system. He leaves the group once they arrive at their destination, but turns up again in time to [[spoiler: perform a YouShallNotPass moment, disappear for a while and eventually turn out to have been a SixthRangerTraitor all along.]]
%% * Aphrodite, Jack Twist and Raphaim from ''Literature/TheHouseOfNight''.
* In ''Literature/TheHeroesOfOlympus'' Nico di Angelo acts as the Sixth Ranger to the [[FiveManBand the Seven]] during ''The House of Hades''.
* There are some borderline examples in the first ''{{Literature/Dinoverse}}'' in Loki and Beanie. Loki never really joins so much as he comes and goes, mostly overseeing Janine. Beanie shows up late and sticks right to Bertram's side. There is a much clearer example in the second set in Green Knight/GK, who in his first appearance tries to eat [[ClassClown Zane]]. (It should be noted that GK is a predatory dinosaur.) GK's love for [[{{Tomboy}} Patience]] is strong enough that he follows her around and refrains from eating her friends, and in fact tries to save one of them in the climax.
* In ''Literature/{{Trainspotting}}'' Second Prize accompanies the main four (Renton, Sick Boy, Spud and Begbie) at the end of the novel as they go down to London for a drug deal, and is also subsequently one of the people Renton rips off, which makes his absence in the film adaption more noticeable.
%% Administrivia/ZeroContextExamples * Jessamine Lovelace from ''Literature/TheInfernalDevices''. Due to her dislike of the Shadowhunter world.
* In ''Literature/{{Twig}}'', the Lambsbridge Gang are a group of children who work for Radham Academy, an AcademyOfAdventure focused around the construction of Frankenstein-esque monstrosities, in order to hunt down the occasional MadScientist who challenges the Academy's monopoly. After investigating a mad scientist looking to build a CloneArmy to replace the children of powerful politicians, they pick up one of the surviving clones, Mary, as a member.

[[folder:Live-Action TV]]
* Richard Grieco's character, Dennis Booker, on the crime drama, ''Series/TwentyOneJumpStreet''. His character was then given his own short-lived spinoff.
* Kat of ''Series/{{Alphas}}'' was introduced in the second season and spent the majority of the following episodes trying to officially join the team, which she eventually succeeded in doing.
* ''Series/{{Arrow}}'': Season 1 establishes 'Team Arrow', the PowerTrio of Oliver, Diggle and Felicity and they gain more members and allies throughout the series.
** Quentin Lance became the group's outsource and police intel starting Season 2 up until the mid-Season 3 due to a fallout. He resumes this position in Season 4.
** Sara Lance comes on board as an on-off member in Season 2 and Roy Harper later joins in the same season on a permanent basis.
** Lyla Michaels becomes a recurring ally starting the Season 2 finale.
** [[ComicBook/BlackCanary Laurel Lance]] from the Season 2 finale onwards spends her time as an outsource and legal aid. Come mid-Season 3, she tires to take her sister's place against the rest of the team's objections. Oliver eventually takes her on board.
** Thea Queen becomes an ally partway through Season 3 and officially a member during the Season Finale.
** Season 3 also introduced recurring allies such as Franchise/TheFlash and his team, ComicBook/TheAtom, and ComicBook/{{Katana}}. Malcolm Merlyn also allied with Oliver briefly, though the relationship was more antagonistic. Nyssa Al-Ghul, though helped Team Arrow in an EnemyMine scenario at the previous SeasonFinale, also officially becomes a recurring FriendlyEnemy during this season.
* Done multiple times on ''Series/BabylonFive''.
** Most of the time, it was to replace a departing character (Sheridan for Sinclair, Lochley for Ivanova), but Marcus Cole, introduced in the third season, is a straight example.
** Bester during his brief HeelFaceTurn functioned as the TokenEvilTeammate version.
* ''Series/BuffyTheVampireSlayer'':
** In season 4, Buffy herself becomes the Sixth Ranger to [[TheGovernment The Initiative]], the newly-introduced organization staffed by [[RedShirt guest-stars]].
** During season 5, the Knights of Byzantium start off as possibly ally or enemy (attack Buffy, but also beat up Glory's {{Mooks}}) before becoming full-on enemies due to their [[KnightTemplar unwillingness to show mercy]].
** Spike started off as a BigBad in Season 2, later performed a HeelFaceTurn, and did indeed end up as the protagonist's boyfriend.
** Anya starts out bad, but performs a prolonged HeelFaceTurn, and ends up part of the group.
** And finally Andrew, who spent most of season 6 fighting against Buffy, only to end up becoming one of the Scoobies the following season.
** Inverted during Season 3. Faith ''[[HeelFaceTurn starts out]]'' good and ends up good, so she is not only Inverted, but also a true Sixth Ranger, two different times. Three times if you include her short stint in the fourth season of ''Angel''. Faith serves as a sort of wild card for either show when the dynamic needs a good shaking.
** Lorne fits this trope in the ''Buffy'' spinoff ''Series/{{Angel}}''. While he debuts in season 2 as a neutral contact when the team has 4 members (Angel, Cordy, Wes, Gunn), he moves in with them and becomes far more involved with them in season 3 when they have 5 members (the previously mentioned, plus Fred) then joins the team officially in Season 4. But during season 3, while he is considered an ally, he isn't considered a core member. After Cordy departs, and Lorne makes up the fifth member, it could be said that Spike becomes the new sixth ranger.
* Jesse joins the ''Series/BurnNotice'' PowerTrio in Season Four. However, tensions are a bit high, given that he's yet to find out that he's the spy Michael (accidentally) got burned.
* ''Series/{{Charmed}}'' has Leo, Cole, Chris, Billie, and Coop all acting as sixth rangers to varying degrees.
* Daniel Shaw from season 3 of NBC's ''Series/{{Chuck}}''. He occasionally joins the PowerTrio of Chuck, Sarah, and Casey on missions but only those concerning his area of expertise, the evil organization known as the Ring.
* In the second season of ''Series/{{Community}}'' Chang attempts to join the study group.
* Hawkes in ''Series/{{CSI NY}}'', who joined the team as a field investigator in season 2. He was coroner before.
* Disney Channel does this in some of their shows:
** Chad Dylan Cooper in ''Series/SonnyWithAChance'', then became Sonny's replacement in ''Series/SoRandom''.
** Marcus Little in ''[[Series/TheSuiteLifeOfZackAndCody The Suite Life on Deck]]'', although he left the series later on and Maya fills the role after he leaves.
** Gunther and Tinka Hessenheffer in ''Series/ShakeItUp'', despite the latter being billed as a recurring character.
** Carrie in the 3rd season of ''Series/AustinAndAlly'', combined with OfficialCouple to Dez.
** Season 2 of ''Series/GirlMeetsWorld'' introduces Zay Babineaux, Lucas' old friend from Texas. He combines this trope with being an AudienceSurrogate, especially as he has been present for episodes with a more serious plot.
** Terry Perry in ''Series/LabRats'' was mostly an antagonist to the main characters, but becomes a full-fledged ally late Season 3 onwards, even though she still antagonizes them every now and then.
* ''Series/DoctorWho''
** Jack Harkness fits this trope in Series 1, temporarily changing the Doctor and Rose's TheHero[=/=]{{Sidekick}} duo to a PowerTrio (once he stops trying to con them). He shows up again two seasons later, just in time to help the Doctor and Martha against the Master.
** Series 5 has Rory to Eleven and Amy. He's a bit character when he first appears, but eventually becomes a companion midway through it. [[spoiler: And then he dies and is blinked out of existence a few episodes later, only to return for the finale.]] And then by Series 6 he becomes a full-time companion for the rest of Amy's tenure.
** In Series 8, starring the duo of Twelve and Clara, Clara's LoveInterest Danny and snarky student Courtney looked like they would become this, but it didn't happen.
* ''Series/DoubleTheFist'' has Tina T, TheChick who replaced Mephisto after he was taken over by an Aztec Demigod. In Series Two we got Tara, a shapeshifting cyborg assassin who was on par with Steve in combat. Comically, she was mostly used for paperwork. Blue Womp would also technically count.
* ''Series/{{Friends}}'': Charlie Wheeler, who ''happened'' to be a TwoferTokenMinority. Also Richard and Pete, two of Monica's early boyfriends that got their own arcs. Other examples include Mike Hannigan, [[spoiler: who marries Phoebe in the end]]; Fun Bobby, Marcel the Monkey, and Gunther who appeared in the most episodes after the main six.
* Tina, Rob, Hector and Casey from ''Series/{{Ghostwriter}}''.
* On ''Series/{{Glee}}'', later additions to the club have included Rachel's boyfriend Jesse from a rival glee club in the first season, new student Sam and DeadpanSnarker Lauren in the second, and Irish exchange student Rory, spoiled rich girl Sugar, Christian dreadlocked hippie Joe, and Kurt's boyfriend Blaine in the third. The fourth (after Rachel, Finn, Kurt, Mercedes, Puck, Quinn and Santana graduated) brings us Unique, [[SuspiciouslySimilarSubstitute Finn and Rachel clones]] Ryder and Marley, Puck's brother Jake, and AlphaBitch Kitty. As of the midway point of the fifth season, all original members have graduated, [[spoiler: but the Glee club was disbanded, although it will presumably return in Season 6]]
* ''Series/{{Heroes}}'' - Sylar, by the season four finale. [[RedemptionEqualsDeath Doesn't look good for him though]]. Made worse in that he already tried it once a season before, [[StatusQuoIsGod and that didn't work out so well]]. The writers kept flip-flopping on what side they wanted him on, so he'd realize that being a good guy is more meaningful, and then realize that EvilFeelsGood, over and over. He ''happened'' to be on the good side of the HeelFaceRevolvingDoor when the show was cancelled, but that doesn't mean he's a good guy.
* Lieutenant Bush is cast this way in ''Series/HoratioHornblower'' (since the adaptation gave Horatio a different {{Lancer}} in Archie). Bush comes aboard pleased to serve under the heroic Sawyer, gets irritated at the other lieutenants' criticisms of Sawyer's erratic behavior, and observes with an unreadable expression. So when he seeks out their mutinous assembly in the middle of the night, they're quite frozen, until he expresses his own opinion of Sawyer's unfitness and that if they're planning to do something, he'd like to join them.
* Jerome from ''Series/HouseOfAnubis'' who technically joins Sibuna for protection from his "boss" [[BigBad Rufus Zeno]]. Joins up with Sibuna again in Season 2 [[spoiler:So they could rescue Trudy who had been kidnapped by Rufus.]]
** Joy also counts as she was important to the mystery in the first season and was added into Sibuna by the end of season 2 [[spoiler:after helping to rescue Nina from under the Senet board]]. In season 3 she is a full member of the team, [[spoiler:but she quits after Fabian breaks her heart.]]
** Eddie also joins Sibuna at the ''[[EleventhHourRanger very]]'' [[EleventhHourRanger end of season 2]] when it turns out [[spoiler:he's the Osirian]]. He didn't officially join until season 3, however.
** Willow joins for a bit in the season 3 finale, but it's cut short when [[spoiler:she becomes a Sinner]].
** TheMovie adds Mara to the team, as well as the new students Dexter, Erin and Cassie. Sophia was also a member, but [[spoiler:she was soon revealed to be the BigBad of the movie]].
* The then-love interests of anyone of the FiveManBand sans [[BetaCouple Lily and Marshall]] fill the role on ''Series/HowIMetYourMother''. [[spoiler:If the actual mother counts, she did so ''very'' [[EleventhHourRanger late in the game]], i.e. 11:58 pm.]]
* Oddly, ''Series/IronChef'' has a one of these: Kobe in the original series fits the trope almost perfectly (as he even has his own customised entrance).
* In ''Series/ItsAlwaysSunnyInPhiladelphia'', Frank appears and joins as the fifth member of "The Gang", which had previously consisted only of Dennis, Dee, Charlie and Mac. Frank has become a staple of the show.
* The ''Franchise/KamenRider'' franchise takes the cake for reducing this trope to a Second Rider phenomenon. The series usually starts with a lone hero, but then a third of the way through the show a second Rider with a different set of gear will appear. The two Riders will usually butt heads for a bit, but soon settle in as allies. A few series do this twice over and build the Riders into a PowerTrio.
** [[Series/KamenRider The original 1971 series]] is ''thought'' to do this when Takeshi Hongo (Kamen Rider 1) is joined by Hayato Ichimonji (Kamen Rider 2), but the way it happens is a bit different: [[RealLifeWritesThePlot Rider 2 was created out of necessity to serve as a temporary replacement for Rider 1 when the actor who played Hongo had to take a break after shattering his leg during a stunt gone wrong]]. Rider 1 returned to help out Rider 2, went away again for a while, then returned to become the main character, and it was Rider 2 CommutingOnABus. In other words, Hayato Ichimonji is the second primary rider, not the first secondary rider, and the legendary duo of the Double Riders doesn't become the way we ''most'' often see the two until the last few episodes, and following teamup appearances.
** The secondary rider phenomenon as it works in the modern era is first seen in the second series ''Series/KamenRiderV3,'' where after soloing for most of the series, he is joined by renegade Destron scientist Joji Yuki, who replaces the arm his rival ruined with a robotic arm with different combat attachments. This is Riderman, who begins the trend of 'secondary rider is evil or an antagonist early on, gradually becomes an ally and/or friend to the primary rider', which most Rider shows from ''Agito'' onwards followed in some way or another. Notably, Riderman himself is not considered by Toei to be a secondary rider due to being an official Showa rider, and as a result, is the only rider without a work of their own to be among the primary riders.
** Series/KamenRiderAgito has the series' second Rider, G3, who was there from the beginning. As the story goes on, they were joined by the anti-heroic Gills and Another Agito.
** ''Series/KamenRiderRyuki'' has several Riders, some good and some evil, that weave in and out of the story. The main heroes are Ryuki and Knight, who work as allies through most of the series with Ryuki as TheCape and Knight as TheCowl; the one who fits this trope and makes their duo a PowerTrio midseason is Kamen Rider Raia. [[spoiler:He eventually dies TakingTheBullet for Ryuki]]. Its adaptation ''Series/KamenRiderDragonKnight'' has a similar setup with their counterparts Dragon Knight, Wing Knight, and Sting (complete with [[spoiler:Sting getting [[NeverSayDie "vented"]]]]); but later on it takes another Rider, Siren, and makes her an AscendedExtra (compared to her ''Ryuki'' counterpart Femme) as she joins the heroes' team as well.
** Series/KamenRiderFaiz and Kaixa. Late in the series, they'd be joined by Kamen Rider Delta (until then, several people had used the Delta powers).
** ''Series/KamenRiderBlade'' starts with a duo (Blade and Garren) that becomes a PowerTrio: Chalice is there from the start but takes a while to go from AloofAlly to... still-not-quite-friendly ally. The Sixth Ranger position goes to the fourth, Leangle, after starting out as a bad guy.
** ''Series/KamenRiderHibiki'' has many Riders, but the focus is on a main PowerTrio of Hibiki, Ibuki, and Todoroki. Of the three, Todoroki is the latecomer.
** ''Series/KamenRiderKabuto'' plays with this. Drake and Sasword join the series later on, but they're just out for themselves. Gatack arrives last and is the one to grow into being Kabuto's Lancer, but the ''character'' was there all along; he was just late getting his Rider gear.
** Series/KamenRiderDenO and Zeronos.
** Series/KamenRiderKiva and IXA, Saga, and Dark Kiva, though the latter two have a case of HeelFaceRevolvingDoor.
** Series/KamenRiderDecade and Diend. An AlternateUniverse incarnation of Series/KamenRiderKuuga is also present as Decade's ally, but in practice he's a sidekick who slowly grows into being more like the original Kuuga over the course of the series, after almost never transforming for quite some time for no discernible reason.
** Series/KamenRiderDouble and Accel.
** Series/KamenRiderOOO and Birth. Unlike most primary and secondary riders, Eiji (OOO) and Date (Birth) never really butt heads, and have a pretty good working relationship. It's Eiji's ally [[AloofAlly Ankh]] who dislikes Date for taking all the Cell Medals from the series' monsters, given that Ankh has to eat them in order to live. Eiji ''does'' have some friction with [[spoiler:Gotou, who later becomes Birth, but they've basically buried any emnity by the time that happens]].
** Series/KamenRiderFourze and Meteor.
** Series/KamenRiderWizard and Beast.
** Averted in ''Series/KamenRiderGaim''. Like in ''Ryuki'', there are a bunch of Riders with various levels of "good" and "evil", but in this case there are almost no true allies amongst them. Four "New Generation Riders" appear with new gear at the usual time for a Sixth Ranger, but three are antagonists and the fourth had been a main character since the beginning. An argument could be made for Kamen Rider Knuckle, as the last to get his powers and the one most firmly allied with Gaim, but he never really rises above "supporting character" status.
** Series/KamenRiderDrive and Mach. Later, TheDragon Mashin Chaser has a HeelFaceTurn and joins the Riders as Kamen Rider Chaser.
** Series/KamenRiderGhost and Specter are later joined by Kamen Rider Necrom. Specter also has the same character arc as most Second Riders, but it's resolved much faster and he uses the same equipment and kind of powers that Ghost does instead of something different.
** ''Series/KamenRiderExAid'' mainly features a PowerTrio of Ex-Aid, Brave, and Snipe; but plays with the "Sixth Ranger" concept with a number of other Riders:
*** The closest analogues to the usual situation, in terms of timing and of unique gear and Rider forms, are Kamen Riders Genm[[note]]as Zombie Gamer[[/note]] and Para-DX, but they're a BigBadDuumvirate and Genm is just a pre-existing Rider that got an upgrade.
*** Much later on, supporting characters Poppy and Nico get powers and fight alongside the three as genuine allies, but they rarely take the field with the others and the show hasn't treated them as full teammates. Instead, an EnemyMine situation develops with Genm, and ''he's'' the one who begins acting as the group's SixthRanger.
*** Kamen Rider Lazer was originally introduced as the fourth main character, only to [[spoiler:get killed off at the end of the first act. He returns BackFromTheDead later, but by that point has been absent so long that he functionally acts as another Sixth alongside Genm.]]
** Series/KamenRiderBuild and Cross-Z get a rival in Kamen Rider Grease. Similar to ''Ghost'', Cross-Z acts as one to Build as well; but the character was there from the start of the series, his path to becoming a Rider was faster, and he uses a variation on Build's tech instead of the newer gear that Grease uses.[[note]]At least at first; after Grease shows up Cross-Z adopts his gear as an upgrade.[[/note]]
* Bob Fossil of ''Series/TheMightyBoosh'' is a sort-of Fifth Ranger to the main group of Howard, Vince, Bollo and Naboo. He was in the radio show and tv show from the beginning, but as antagonist with not much focus. After series one ended, he vanished from the show, as the main characters no longer worked for him. He had a single cameo in series two, then in series three he appeared in a neutral role in a few episodes, though the other characters still don't like him. In the live shows, however, he's updated to full group status, fights on the side of the heroes, and seems to be at least somewhat friendly with Vince and Howard.
* ''WebVideo/MightyMoshinEmoRangers'', a UK fan-made series (that made its way to Creator/{{MTV}}) which parodies both the Power Rangers and "emo" culture, did this in its first season with the addition of Fai, the Purple Fashioncore Ranger.
* ''Series/{{Misfits}}'':
** Played with on episode 2.4, which introduces a guy named Ollie with all the traits of a sixth ranger: he joins the community service with the main gang, starts to get along with them and even has a superpower like them... but he's killed ten minutes into the episode. Ironically, Ollie's heart is transplanted to IllGirl Nikki, who eventually becomes the sixth ranger for the rest of Season 2.
** Seth becomes the sixth ranger in Season 3.
* Prince Garrett in ''Series/TheMysticKnightsOfTirNaNog''.
* ''Series/{{NCIS}}'':
** Jimmy Palmer jumped in for Gerald after he was shot in the first season , and became a member of the main cast in season ten. Unlike the substitutions of Ziva, Vance, and Bishop, he didn't fill an existing role as a cast regular, as Gerald was never a member of the main cast. [=McGee=] or Shepard might be considered Sixth Ranger material as well, although the creation of their roles was so early in the series and so ingrained into the show's early identity as a straight procedural that they could not be said to have really altered the show's character. Palmer's increasing relevance goes hand in hand with the development of NCIS as a misfit family series as much as a procedural.
** After Ziva leaves in the tenth season, it is open if she'll be a recurring guest from time to time.
** Tobias Fornell, Hollis Mann, Mike Franks, Abigail Borin, Diane Sterling, EJ Barrett and Jake Malloy are/were notable recurring allies of the main cast.
* ''Series/{{Reno 911}}'' gave us Deputy Kimball in season 3.
* Nasir silently joins the Merry Men at the end of the pilot episode of ''Series/RobinOfSherwood'' after being set up as a minion of the bad guys. Yes, that's one episode in, but it's also a brand new Myth/RobinHood character after about 600 years.
* Koichi Shiranami/Ryujinou in ''[[Series/MadanSenkiRyukendo Ryukendo]]''.
* ''Series/{{Sherlock}}'' gives us Mary Morstan (who then becomes Mary Watson) in Series 3. Seems to be inverted/subverted in that she comes across as one of the good guys from the beginning; then it seems like she's secretly evil when we find out that [[spoiler:she was formerly an assassin]]. Ultimately double-subverted, as she turns out to be an ultimately good woman with a dark past who truly loves John.
* Vala Mal Doran in ''Series/StargateSG1''. In mid-season eight, she [[spoiler: unsuccessfully]] hijacks the Prometheus. In Season nine, she gradually moves from minor villain to anti-hero, being partially responsible for bringing the [[spoiler: Ori]] to the Milky Way among other things. In season ten, she becomes a full SG-1 member, though not after [[spoiler: losing her memory]] once.
* Pavel Chekov in ''Series/StarTrekTheOriginalSeries''.
* Seven of Nine from ''Series/StarTrekVoyager''.
* Worf and/or Ezri Dax from ''Series/StarTrekDeepSpaceNine'' could count as this.
* In season 2 of ''Series/StrangerThings'', [[BigBrotherMentor Steve]] and [[GamerGirl Max]] end up becoming this to the Party. The former spent the first season barely knowing them, while the latter starts out as the new kid in school. By the end, they're pretty much accepted into the fold after bonding with the Party and proving their skills. This gets lampshaded with Max, as most of the group except Lucas are initially wary of letting her in on TheMasquerade expressly because they feel they don't ''need'' a Sixth Ranger (that and, it's implied, Mike unconsciously seeing her as a ReplacementScrappy for [[spoiler:Eleven]]). They only change their minds when [[spoiler: Max saves Steve from Billy and helps out during the mission to distract the Mind Flayer]].
* ''Series/{{Supernatural}}'' has seen several attempts at adding a Sixth Ranger to the Winchester brothers, with varying degrees of success. Ruby turned out to be a SixthRangerTraitor, but Castiel and Bobby seem to have well and truly worked their way into Team Free Will.
* In the ''Franchise/TeenageMutantNinjaTurtles'' TV series ''Series/NinjaTurtlesTheNextMutation'', a fifth, [[TheChick female]] turtle named Venus was introduced to the previously all-male quartet. (She could be a sixth ranger if you count Splinter, though.)
* Derek Reese in ''Series/TerminatorTheSarahConnorChronicles'', who showed up late in the first season.
* ''Series/{{Torchwood}}''
** For the first half of Season 1 or so, this is Ianto, but by the end of the season he's just as much a part of the gang as the others. Season 2 has Martha and Season 3 has Lois.
** Rhys is the recurring Sixth Ranger from the middle of Season 2 onwards.
* Some of the shows in the ''Franchise/UltraSeries'' have featured secondary Ultrabeings that help out the main hero in times of need, although most of them were just guest characters that appeared for a few episodes or heroes from previous shows. It wasn't until ''Series/UltramanGaia'' that the show featured two regular Ultra Heroes, the eponymous Gaia and his rival Ultraman Agul.
* Kylie Minogue was once designated as the pink [[Music/TheWiggles Wiggle]].

* In the EasternZodiac, or works that adapt from it, the Cat is sometimes treated as the 13th and additional element to the group generally consisting of its twelve signs.
* Similarly, because of its recent astrological upgrade as a solar constellation, Ophiuchus can enjoy this role in the WesternZodiac.

* Music/IronMaiden had five men line-ups since 1980. Then when Music/BruceDickinson and Adrian Smith decided to return to the band, Janick Gers served as a Sixth Ranger to a reunion of the golden years Maiden. This meant that the band had THREE GUITARISTS and is one of the few (and certainly the most popular) band to do so. It is said that Janick was kept on for three reasons - he had worked with Bruce solo, he kept the group entertained, and so that Adrian and Dave able to do twin solos and have a rhythm guitarist underneath.
* The Music/BlackEyedPeas were originally a trio (the three guys), before [[ThePeteBest Sierra Swan, Kim Hill]] and Fergie joined.
* Keyboard player Billy Preston joined Music/TheBeatles for their ''Film/LetItBe'' album/movie in 1969, was the only musician after 1963 to be co-credited on a Beatles single. and was commonly called the "Fifth Beatle". George Harrison, who brought Preston into the studio in the first place, unsuccessfully tried to convince the band to make him an official member, noticing the positive effects Preston's presence had on the band on the band musically and personally.
** Other candidates for the role of "Fifth Beatle" include their producer George Martin, and sometimes their manager Brian Epstein. Others who were involved with them are ex-drummer [[ThePeteBest Pete Best]], ex-bassist Stuart Sutcliffe (who quit the band to get married before they made it big, then died of an undiagnosed aneurysm a year later), and Music/EricClapton (he played on several of their tracks and was seriously considered for membership in the band at one point).
* Raymond Watts had this effect when he briefly rejoined Music/{{KMFDM}} for their album ''Nihil.'' The usual vocal lineup of Sacha K, En Esch, and whatever female singer they were working with at the moment (typically Dorona Alberti) was disrupted as Watts took over lead vocal duties on half of the album's tracks and En Esch was only the featured singer on one song. This paved the way for the band to become more reliant on guest singers for the next four albums with Watts, Chris Connelly, Ogre and Tim Skold (who was also something of a Sixth Ranger himself) appearing on multiple tracks.
* Linkin Park's bassist Dave "Phoenix" Farrell. He was a part of the original lineup, known as Xero from 1996-1998, but had commitments with another band called Tasty Snax, so left the band until 2001, when he returned. During the period he was away, the band recorded their first album Hybrid Theory and got their first mainstream exposure, which brought them great popularity. On the back cover of this album, only the five main members are shown, which led many to assume those were all the people in the band. On the Hybrid Theory album itself, bass duties were split between usual guitarist Brad Delson, touring bassist Scott Koziol and session bassist Ian Hornbeck. played the rest. When Phoenix returned in 2001 shortly after the release of One Step Closer as a single, many fans who didn't know about him felt that he was the Sixth Ranger joining an established band, and to many it still feels like that.
* Swedish GarageRock quintet Music/TheHives credit their manager Randy Fitzsimmons as their sixth member and main songwriter. However, Fitzsimmons [[NotSoImaginaryFriend may]] or [[ImaginaryFriend may not]] actually exist. The Hives claim he is a real person. The music press are deeply skeptical.
* Music/YellowMagicOrchestra have always been primarily thought of as a trio, but several of their collaborators (such as Chris Mosdell and Peter Barakan, who wrote most of the band's English lyrics) have been unofficially considered the band's "fourth member". The primary candidate, however, is Hideki Matsutake, who produced most of the band's early releases and has actually performed as part of their touring lineup.
* WesternAnimation/RudolphTheRedNosedReindeer, as noted in the eponymous song's lead in. He was created about a century [[Literature/TwasTheNightBeforeChristmas after the other eight]]:
-->''You know Dasher and Dancer and Prancer and Vixen''\\
''Comet and Cupid and Donner and Blitzen.''\\
''But do you recall, the most famous reindeer of all?''
* Music/{{Rammstein}} started out with four members; guitarist Paul Landers joined shortly after hearing Rammstein's fist demo recordings, making them five. The sixth, keyboardist Flake, was essentially badgered into playing with them: they needed a keyboardist but he refused because it seemed blunt, boring, and strict. Eventually he did start to play with them on the condition that he'd leave if he'd get bored. According to Landers Flake has in fact never actually answered the question whether he'd join them or not.
* The Music/FooFighters have a variant: the band always performed live as a quartet, until the ''In Your Honor'' tour made them hire touring musicians. One of those, guitarist Pat Smear (who was also part of the band's first formation), was reinstated as an official member in 2010, and another, keyboardist Rami Jaffee, earned the same status in 2017.
* Matt Mangano had been collaborating with Music/ZacBrownBand even prior to officially taking over on bass in 2014 (notably, he played on one song on 2012's ''Uncaged'' but was credited as a guest at the time). His addition to the lineup allowed existing bassist John Driskell Hopkins to take over on other instruments.
* Music/GratefulDead member Robert Hunter joined the group in 1967 just after they recorded their debut album, remained an official member until they broke up in 1995 and was inducted with the other members into the Rock and Roll Hall of Fame. What made him different from all of the other members was that he wasn't part of the band as a musician, but as their primary lyricist. Band leader Jerry Garcia even referred to Hunter as "the band member who doesn't come out on stage with us" and considered him to be just as much of an official member of the Grateful Dead as the musicians in the group were.

* Played straight in many series of ''Toys/{{BIONICLE}}''. Beginning in 2003 (and ending in 2009), Lego sold an extra basic-sized figure (usually referred to as a "Seventh Toa") packed in with a vehicle and sold at a higher price point, and usually joined the main team of heroes in-universe later in the story, though almost every year deviated from this in some way;
** 2003 - Takanuva was a new member who joined the team just before the finale of the first movie (and stayed with them afterwards) and was packed with the Ussanui (which existed for about 30 seconds before being destroyed in the movie) and is considered the basis for the seventh toa in the rest of the franchise.
** 2004 - Toa Lhikan was packed in with a Kikanalo, though in-universe, he existed before the main heroes and is the one who gave Toa Metru their powers.
** 2005 - The only year without a true Seventh Toa, though the special edition "Toa Norik" and Toa Iruni were sold on the side and fill the seventh toa slot (though both were sold at the same pricepoint at the regular figures, neither had a vehicle, and were completely disconnected from the main story in-universe).
** 2006 - Vezon filled the seventh toa slot but was a villain instead of a hero. Vezon was packed with the mechanical spider Fenrakk, and (in-universe) was a clone of the Piraka Vezok (Vezon is even the Matoran word for "Double") and fought both the Piraka and the Toa Inika.
** 2007 - Lesovikk filled the seventh toa role toy-wise (being packed with a "Sea Sled"), but never met the main heroes (the Toa Mahri) in-universe.
** 2008 - Toa Ignika, packed with a "Skyboard" was, in-universe, the Mask of Life given a physical body who joined and fought beside the team after initially being questioned.
*** Ironically, the original Seventh Toa, Takanuva, also made an appearance (though in a much larger, Titian-sized form).
*** It should be noted that there was another villain, Murtan, who was also a basic figure and was packed with another smaller figure (Vican) and was sold as an exclusive, though Ignika more closely follows the Seventh Toa formula.
** 2009 - It could be argued that Fero falls into the seventh toa slot as he was a basic figure (though he was matoran sized, not toa-sized) and was packed with a large reptilian steed, Skirmix.

[[folder:Video Games]]
* ''VideoGame/ChronoTrigger'': Magus (optionally) joins the party very late into the game, [[RedemptionDemotion significantly less powerful]] than he is when you fight him (either at the halfway point of the game or if you chose to fight and kill him there instead of have him join you). He very much has an 'odd man out' feel to him in other ways as well (he has no 2-person combination attacks and very few three-person combination attacks, the initial six characters have 3 2-person combination attacks for each of the five other characters among them, and there is one 3-man combo attack for each mix of Chrono + 2 of the other first six.)
* ''VideoGame/GoldenSun: The Lost Age'' has an interesting variant - [[spoiler: the heroes from the first game]] will join the party as Fifth through Eighth Rangers after a certain point in the story.
** ''Dark Dawn'' ratchets the party size up to four from the starting two over the course of the opening act, then adds a fifth member almost immediately after the prologue concludes and a sixth about a third of the way through the game who acts as the [[SupportingProtagonist functional main character]] due to being massively important to the entire rest of the plot. A seventh member gets added slightly past the three-quarters mark to provide the rest of the characters with a GlobalAirship, followed immediately by an eighth [[FlatCharacter who never says or contributes anything of note after her introduction]] and seemingly joins just so there will be two characters of each element.
* Iori Yagami in ''Videogame/TheKingOfFighters'', who was initially introduced as Kyo's rival (to the point that Iori was trying to kill him most of the time), and then became his reluctant ally when Orochi showed up.
* ''Franchise/FinalFantasy'':
** ''VideoGame/FinalFantasyII'' continues shifting out the 4th party member without the player's control straight up until the final dungeon, at which point [[spoiler:one of the main villains]] joins your team.
** In ''VideoGame/FinalFantasyIV'', Baigan invites himself into the party at a time when the party limit is five characters, and Baigan joining brings the line-up to six. In a subtle case of LampshadeHanging, Palom and Porom note that something is suspicious about this. [[SixthRangerTraitor Baigan then reveals himself as a monster and attacks.]]
** ''VideoGame/FinalFantasyVI'': Of the non-optional characters, Strago and Relm are the last to join and do so after you feel "done" recruiting. They are both naturally powerful mages who have the misfortune of joining after your existing magic specialists, Terra and Celes, are likely already trained up with Magicite and shortly before [[BreakingTheFellowship the party is scattered]] in the World of Ruin, meaning they can easily suffer a fate of CantCatchUp if you don't go out of your way to develop them.
** ''VideoGame/FinalFantasyVII'' has Cait Sith, who is recruited into the party after the majority of the main cast (although he is actually the 6th party member after Cloud, Tifa, Barret, Red XIII and Aerith not counting players who recruit Yuffie 'early') but does almost nothing untill he is revealed to actually be a bad guy who then turns to the good guys side for real later on.
** Towards the end of disc 3 of ''VideoGame/FinalFantasyVIII'', you get [[spoiler: Edea, who has just been freed from being BrainwashedAndCrazy]] as a party member. [[spoiler: She stays with the party until you go into space.]]
** In ''VideoGame/FinalFantasyXIII'' you have Oerba Yun Fang, who joins the party during their encounter at Palumpolum. She first appeared in Chapter 3 when she captured Snow for being an L'Cie, but later helps Snow escape and they both catch up with Lightning and Hope. This could have been rather well done and unexpected, if Squeenix hadn't given it away within a week of first announcing the character.
* Chitose and Natsume in ''VideoGame/GalaxyAngel'', especially [[VideoGame/GalaxyAngel the games]].
* In ''VideoGame/SuperRobotWarsW'', the [[Anime/{{Voltron}} Golion]] team actually asks Guy of ''Anime/GaoGaiGar'', an old friend of theirs from the space academy, if he wants to be their Sixth Ranger. Although he politely declines, he occasionally ends up playing the role anyway, especially considering that in this game, both Ghaleon and Golion have the same origins. The game actually references the Sixth Ranger trope a bit; when Guy points out that Ghaleon can't combine with Golion, Kogane comments that the sixth member of such teams typically has a special HumongousMecha that tends to overshadow the other five in terms of power.
** The [=GoLion=] team helps out Guy, too. During the battle between Guy's [=GaoFighGar=] and an enemy repli-[=GaoGaiGar=] in the ''FINAL'' storyline, another Replijin of ''Anime/GaoGaiGar'''s own Sixth Ranger, King J-Der, shows up to make things worse... at which point the Hundred Beasts King [[BigDamnHeroes appears to even the odds]].
** In the ''[[VideoGame/SuperRobotWarsOriginalGeneration Original Generation]]'' series, the crew of the Kurogane is a ''[[BadassCrew team]]'' of Sixth Rangers. In the first two games, it was made up of reformed {{AntiVillain}}s and [[StealthMentor Stealth Mentors]], and they consider it their duty to operate independently until it's time to join the main cast halfway through the latest game's plot. The leaders of the crew, Sanger and Elzam, could also each be traited as a Sixth Ranger in his own right to one of the protagonists' sub-teams (Sanger to the ATX team, Elzam to the SRX team).
** Speaking of the SRX team, Mai Kobayashi, aka [[SuperpoweredEvilSide Levi Tolar]], starts off being an enemy, but after switching sides, she unlocks the SRX's most powerful attack, which in some games is a OHKO WaveMotionGun.
* Sheena, in ''VideoGame/TalesOfSymphonia''; her joining the party (formerly a FiveManBand) marks the point at which the plot begins to twist. The Sixth Ranger added to the earlier PSX remake of ''VideoGame/TalesOfPhantasia'' was ''Fujibayashi'' Sheena's [[{{Fanon}} possible descendant]], Fujibayashi Suzu.
* In ''VideoGame/TalesOfTheAbyss'', Asch fits this role perfectly: he's a powerful antihero with ambiguous motives who [[GuestStarPartyMember joins the party for a while]] (and is [[CrutchCharacter much more powerful]] than the person he replaces). Later you get a second chance to recruit him into the party, only this time he's way ''behind'' the power curve, due to being stuck with the same equipment he had twenty levels ago. This is {{Lampshaded}} with the Abyss Rangers costumes you can acquire: Asch becomes "Abyss Silver", a typical Sixth Ranger colour in ''Franchise/SuperSentai''.
* In ''[[Videogame/Lunar2EternalBlueComplete Lunar 2: Eternal Blue]]'', the party is in flux for most of the early part of the game, gradually picking up additional characters, eventually stabilizing on 5 members (not including Lucia, who is not always player-controlable, and is occasionally abducted and [[DistressedDamsel must be rescued]] by the party). One of the antagonists, Leo, joins then leaves the party several times as a Sixth Ranger, both as himself, and as his blatantly obvious alter-ego "Mystere" (the absurdity of his disguise is {{lampshade|Hanging}}d by the other characters).
* Depending on how you played the game, you probably went through the majority of ''VideoGame/DevilSurvivor'' with only 3-5 party members. Cue the final day when the rest of the supporting cast get tired of being [=NPCs=]. Depending on the decisions you've made throughout the game, it is entirely possible for your party roster to double in size.
* ''[[Franchise/ShinMegamiTenseiPersona Persona]]'':
** ''VideoGame/Persona2'': In ''Innocent Sin'', Jun Kurosu is the last member to join the party, only doing so after [[spoiler:he has a HeelFaceTurn]]. In ''Eternal Punishment'', Tatsuya Suou, the protagonist of ''Innocent Sin'', only joins the party when he's ''finally'' forced to accept their help.
** In ''VideoGame/Persona4'', Naoto Shirogane is the last character to join. Given that Naoto is also an actual [[KidDetective Detective]] rather than an AmateurSleuth like the rest of the Investigation Team, it also marks the point where they are finally able to make some headway into the murder cases.
** ''Videogame/Persona5'' has Goro Akechi, who like Naoto is a detective who is the final character to join the party. [[spoiler:Unlike Naoto however, he's actually the SixthRangerTraitor, secretly working for the main antagonist to destroy the Phantom Thieves from inside.]]
* Originally Knuckles started out as ''Franchise/SonicTheHedgehog'''s enemy only to eventually team up with him and Tails to form a PowerTrio.
* [[spoiler:Flora]] in the ''VideoGame/ProfessorLayton'' series of games.
* Most veteran players in ''Franchise/{{Pokemon}}'' will have one 'mon in their six slot party learn nothing but Hidden Machine moves, which are needed to get through various environmental obstacles. The reason why these moves are given to one Pokémon is because they cannot be replaced by newly learned moves, and typically range from mediocre to useless in battles. As a result, trainers will end up with a [[{{Pun}} Five Mon Band]] for matches and a utility knife who will never see the next level-up. In such cases, the player will usually pull out and raise a brand new replacement 'mon for the HM slave (usually a late-game catch, such as a plot Legendary or the Red Gyarados) so as to have a full team for the Elite Four and Champion. This is an interesting case, as it was the player, not the plot, that added the Sixth Ranger to the team.
** In terms of Pokémon {{Power Trio}}s, in ''VideoGame/PokemonBlackAndWhite'', Keldeo is the D'Artagnan to Cobalon, Terrakion, and Virizion's [[Literature/TheThreeMusketeers Three Musketeers]].
** Ho-oh and Lugia round out the [[PowerTrio bird trio]], providing [[FiveManBand fourth and fifth rangers]] in Gen II.
** Many legendary trios have a Fourth Ranger; in addition to the above cases,[[note]]though Ho-oh is usually counted among the three beasts of ''Videogame/PokemonGoldAndSilver'',[[/note]] the Golem Trio has Regigigas, and the Creation Trio has Arceus.
** Also, the Eeveelutions; we began with Normal, Water, Electric, and Fire, added [[ThreePlusTwo Psychic and Dark]] in Gen II, added Grass and Ice in Gen IV, and then a Fairy-Type in Gen VI.
* ''VideoGame/VandalHearts'' has what feels like several of these, as the party eventually numbers out at thirteen members. Ash, Clint, Diego, Huxley, Eleni, Zoha'ar, Kira, Grog and Dolan all get their own plotlines, if not development. On the other hand, Sara and Amon just join with Dolan and contribute nothing to the plot though most egregious is Darius, who joins a little before the half way mark because he was in the same cell, tags along with the party for a reason that's never even given and only has one him-centric scene after he joins where he's revealed to have been from Huxley's village and and doesn't like him. After that he only gets the odd line that anyone could give.
* ''Franchise/DragonAge'':
** Later on in ''VideoGame/DragonAgeOrigins'' it's possible to recruit [[spoiler:Loghain]] into your group. However in doing so [[spoiler:your Lancer Alistair will leave you for allowing the man who let countless people, including the King and his father figure Duncan to die into the Grey Warden.]] Few people get along with him, particularly [[TeamMom Wynne]], who insists on calling him out for his former actions whenever possible.
** ''VideoGame/DragonAgeII'' has [=DLC=] character Sebastian Vael. His earliest appearance is in the first act along with everyone else, but he doesn't become playable until Act II. If you download the mission in Act III of a playthrough, he's more of an EleventhHourRanger.
** ''Videogame/DragonAgeInquisition'' has either Cole or Dorian; you can recruit one of them shortly after the other optional teammates become available, but doing so locks you out of recruiting the other until they show up in the Act 1 finale.
* Serena Corsair in ''VideoGame/GuardianHeroes''. Although technically she joins forces with Han and his friends at the very beginning of the game, she doesn't become a playable character until the player completes the game once on Normal.
* ''Franchise/MassEffect'':
** Thane Krios and Samara of ''VideoGame/MassEffect2'' are amongst the last of the recruited members of the team. Tali might also count, though she fits more into TheSmartGuy. Legion would also count as an EleventhHourRanger.
** ''VideoGame/MassEffect3'' has DLC squad-mate Javik. He's not necessarily the last guy to join you, depending on when you do his mission, but everyone else in your team is a returning character except James, who's with you from the start of ''3'' and fits TheBigGuy better anyway.
** ''VideoGame/MassEffectAndromeda'' has Jaal. He's the last recruitable squadmate, and the only one actually native to the Andromeda galaxy - everyone else on your team came as part of the Initiative.
* [=SPARTAN-B312=], a.k.a. Noble Six from ''Videogame/HaloReach'', is the newest addition to Noble Team and completely fits the trope, up to and including surpassing the rest of the group.
--->'''Carter:''' Six! [[spoiler:That AI chose you. She made the right choice.]]
* The Pink Knight in ''VideoGame/CastleCrashers'' exclusive to the [=PS3=] version is this.
* In ''Videogame/SaintsRowTheThird'', [[spoiler: Viola Dewynter [[HeelFaceTurn joins]] the Saints shortly after Killbane kills her sister Kiki.]]
* ''VideoGame/ChromaSquad'', being a parody of ''Super Sentai'' and ''Power Rangers'', features several Sixth Rangers, most of whom are guest stars in an episode who join your Sentai team for a single battle. [[spoiler:Late in the game, you can also recruit a Sixth Ranger, Tammy, as a permanent member of your team's roster.]]
* ''Videogame/WorldOfWarcraft'':
** The game has an entire character class being introduced like this: the [[BlackKnight Death Knight]]. They were the first new class introduced to the game since launch, start the game at level 55 with equipment that surpasses just about anything that any other character may have by this point, are [[HeelFaceTurn former minions of the villainous Lich King]], tend to act explicitly antisocial (as both non-player characters and death knight roleplayers in-character) and, in a meta example, were considered the overpowered new kid on the block before ultimately being accepted.
** The Forsaken (and later even the Blood Elf race) faction joining the Horde can be seen as this taking into account that the original Horde races share a history in previous Warcraft games and settle close together whereas the Forsaken not only reside on a different continent, they also start with the lowest reputation toward their allied races in the game.
* In the final route of ''VideoGame/DuelSaviorDestiny'' Princess Crea takes up a more prominent role, turning what was originally a harem route into one that is still technically a harem route in the end, but one that is centered around her. She even gets to follow the group to the final battle area despite having no combat ability and the scenes not really being written to include her.
* ''VideoGame/LufiaCurseOfTheSinistrals'' has an interesting case with Dekar, who firsts joins as the ''fifth'' member but rejoins as the Sixth Ranger after [[spoiler:he returns from his apparent HeroicSacrifice]].
** He also holds this role in ''VideoGame/LufiaTheRuinsOfLore''.

[[folder:Visual Novels]]
* Shion from ''VisualNovel/HigurashiWhenTheyCry'', then [[spoiler:Hanyuu]].
* Jay from ''VisualNovel/LovelyLittleThieves'', who is a newcomer to the main character's group of friends, of, quite fittingly, five people. The only who knows Jay is Danielle, as he is her lab-partner in college, and even she brought him along to get to know him better.
* Athena Cykes from ''VisualNovel/AceAttorney'', she joined the main cast in the fifth game directly as a playable main character and introduced a new mechanic to the series that became a main stay on the series since then. Conveniently, she also became the sixth person to join Phoenix little group of assistants/family (after Maya, Pearl, Apollo, Trucy and Phoenix himself).

[[folder:Web Comics]]
* Meenah Peixes in ''Webcomic/{{Homestuck}}'' is sort of seen as the thirteenth troll. While most of the other pre-scratch trolls are okay with [[spoiler:being dead]], Meenah and Aranea are constantly fighting to remain relevant, to the point that Meenah has probably become a more essential part to the story than even her dancestor, Feferi, was.
* ''Webcomic/ElGoonishShive'' started with a ComicTrio and now has an eight-person main cast. Justin and Nanase aren't really Sixth Rangers, but Grace qualifies if Layla (below) does. Susan and Ellen are definitely better examples, though: Susan started out disgusted with Elliot and Tedd before befriending them through Sarah, and [[OppositeSexClone Ellen]] began her life as Elliot's self-proclaimed EvilTwin. There's also Catalina added as a Sixth Ranger. She's a buddy of Susan's from the feminist club whose main purpose was to have an unrequited love for Susan.
* ''Webcomic/{{Frivolesque}}'' mostly focuses on five main characters. And then there's Clementine, one of the secondary cast members, having her own subplot and appearing every so often. Many people consider her to be the sixth main character.
* ''Webcomic/SluggyFreelance'':
** Aylee starts off as your standard ''Franchise/{{Alien}}'' parody trying to eat our heroes, but after accidentally returning to their dimension, makes peace with them and becomes Torg's secretary, and eventually a full-fledged [[TrueCompanions True Companion]].
** Riff's girlfriend [[EnsembleDarkhorse Sasha]] became one of these shortly after being introduced. She was a versatile character, able to get along with the MadScientist Riff just as well as the [[OnlySaneMan Only Sane Woman]] Zoë. However, she stuck around after Zoë moved away, but left at the same time Zoë returned. [[spoiler: Sasha returned seven years later, to round out the main cast after a couple vacancies opened up.]]
* Aaron/Jackson from ''WebComic/SamAndFuzzy''. Although most characters besides the titular duo are confined to one particular story arc (outside of cameos), Aaron managed to join with them at the end of the third story arc and has stayed a major character since.
* Alexander from ''Webcomic/TheDreamer'' counts, as he first appears in issue #8.
* ''Webcomic/{{Earthsong}}'': Willow is an interesting version of this: the story starts around her, so we don't see much of the FiveManBand before she showed up, but part of the background is that it has been there a good, long time.
* Pella from ''Webcomic/LookingForGroup'' joined the party during their time-travel adventure. Adding the Dwarven Bard was part of the writers' initiative to distance themselves from the ''VideoGame/WorldOfWarcraft'' parody they started as.
* Emily the [[SquishyWizard wizard]] joins Julie's group in 'Book 2' of ''Webcomic/OurLittleAdventure''. Later, Jordie also joins the team [[spoiler: and officially takes her place when Emily is exposed as a ManchurianAgent SixthRangerTraitor.]]
* Bayn from ''Webcomic/TrueVillains'' joins the group after dealing with Xaneth and surpassing the BigBad in terms of power. [[spoiler:Xaneth turns him into a kid to take away his powerful magic.]]
* Shining Armor helps out his sister and her friends during Act I of ''Webcomic/ThreeApples''. While temporary, it underscores Applejack's growing insecurity, as he effectively replaces her as TheBigGuy during their travels together.
* ''Webcomic/StandStillStaySilent'': Reynir is LittleStowaway to an otherwise complete exploration crew. He also happens to have magical powers that he wasn't aware of before going on the trip and work a little differently from those of the mage who's actually part of the crew.

[[folder:Web Original]]
* This rather [[https://www.youtube.com/watch?v=TvANZRUvmWM "bizarre video"]] parodies this trope with a 'kale ranger.'
* French amateur ''Franchise/SuperSentai'' parody ''WebVideo/FranceFive'' starts out with the ''introduction'' of the Sixth Ranger ("Silver Mousquetaire") to the FiveManBand, but still faithfully follows the trope since the episode is supposed to be in the middle of a hypothetical TV series. Also, he doesn't actually join the band before [[spoiler:his HeroicSacrifice, TakingTheBullet for his de-[[BrainwashedAndCrazy brainwashed]] cousine]].
* Most team members of Website/ThatGuyWithTheGlasses qualify, if you consider the main "team" to be the Nostalgia Critic, Linkara, the Nostalgia Chick, Suede and Marzgurl. Spoony could even be said to follow this Trope full circle- he became immensely popular and then left (Due to business deals in 2012- Spoony still appears in some videos on TGWTG). In WebVideo/SuburbanKnights, WebVideo/ToddInTheShadows, [[WebVideo/LukeMochrieAndTheInners Kinley]], and WebVideo/ObscurusLupa are this, as they were added to the specials after the Brawl and Kickassia had basically the same major cast both times.
* WebVideo/ToBoldlyFlee adds WebVideo/JesuOtaku, [[WebVideo/FamiliarFaces CR]] and Sad Panda to the team.
* The titular guild from ''Series/{{Noob}}'' gets a few additions over the course of the series: Ivy and Couette joined at the same time, giving the guild a GadgeteerGenius and a second [[TheMedic healer]]. Ystos eventually joined via a second character, but was almost one beforehand between his somewhat BigBrotherMentor status and [[spoiler:his takeovers of Sparadrap's avatar]].(Those who think Golgotha is missing from the list please check HonoraryTrueCompanion.)
* LetsPlay/LewisBrindley to LetsPlay/{{Sips}} for the ''VideoGame/TroubleInTerroristTown'' playthrough, and eventually many other ''VideoGame/GarrysMod''-themed videos. Initially, the series had involved Sips, LetsPlay/HatFilms and LetsPlay/{{Turpster}} playing various ''VideoGame/GarrysMod'' gametypes, but adding Lewis to it shook up the dynamic, adding a sixth member to the videos. On top of that, Lewis only appeared in TTT and not in other gametypes until September 2014, where he eventually joined ''Murder'' and ''Prop Hunt'' as well. ''VideoGame/PropHunt'' on Sips' channel eventually adds both Lewis and [=PyrionFlax=], and then LetsPlay/{{Sjin}} joined up with Sips and company for a new series of TTT, bringing the total number of players to seven. LetsPlay/{{Strippin}} then joined up for ''Murder'' and ''Prop Hunt'' in November 2014, staying for one series. After this, the lineup changed for some videos altogether, with Lewis and Sips returning and newcomers LetsPlay/HannahRutherford, LetsPlay/SimonLane, LetsPlay/KimRichards and LetsPlay/DuncanJones replacing everyone else.
* [[{{Nerd}} Eugene]], [[WebVideo/MatthewSantoro Matt Santoro's]] clone. [[TheLeader Matt]], [[TheBigGuy Big Shine]], [[TheCasanova Lorrenzo]], and [[TheDitz Hugo]] had already been introduced as characters, but [[TheLeader Matt]] didn't bring him on board until his video ''Franchise/StarWars in 3-D!!!''. [[TheLeader Matt]] is quick to explain to the audience who he is.
* Creator/AchievementHunter's team used to be comprised of Geoff Ramsey, Jack Pattillo, Creator/RayNarvaezJr, Creator/MichaelJones, Creator/GavinFree with the original Sixth Ranger being Caleb Denecour. However, he ended up being phased out in favor or Ryan Haywood, who stuck on. With Ray having left the team, his role is usually filled in with either Matt Bragg or Jeremy Dooley. Episode 177 of ''[[LetsPlay/AchievementHunterMinecraftSeries Let's Play Minecraft]]'' officially made Jeremy the newest member of the team with his first Tower of Pimps win.
* ''WebAnimation/DSBTInsaniT'': Chilly and Perry become a part of the ensemble from episode 5 onward.

[[folder:Western Animation]]
%%* Dinobot fills this role in ''WesternAnimation/BeastWars''
* ''WesternAnimation/{{Rugrats}}'' started out with a main cast of Tommy, Chuckie, Phil, Lil, and Angelica, with [[RecurringCharacter occasional appearances]] by Susie. About halfway through the show, Tommy gained a little brother, Dil, and Chuckie later got a stepsister, Kimi. Both were introduced in one of the movies: ''WesternAnimation/TheRugratsMovie'' and ''WesternAnimation/RugratsInParis'' respectively.
* ''Franchise/ThomasTheTankEngine''
** Season 1 started with a core cast of 5 engines (although James was only named a few episodes into the season). About halfway through, Percy was introduced. Poetically, like the TropeNamer pictured above, he's both green, and the 6th member of the team.
** This also applied to Duncan and Rusty from the narrow gauge railway. Also, Emily is considered a sixth ranger to the main cast, from season 8 onwards.
* Aisha of the ''WesternAnimation/WinxClub'' (introduced in the 2nd season premiere), although she's on the good fairies' side from the start, and the biggest misgiving anyone has is Layla feeling left out when Stella mentions "the five of us" in one episode. Helia joins the Specialists in season 2, while Nabu joins them at the end of season 3. Roxy is notable in that she seemed to be set up as one in season 4 since she was the focus of that season, but come season 5 and she's been DemotedToExtra.
* ''WesternAnimation/AvatarTheLastAirbender'':
** Toph turned the protagonist's team from ThreeAmigos into a FiveManBand when she filled the empty TheBigGuy spot as a CuteBruiser. After a few episodes, she fits in pretty well despite the occasional argument with Katara.
** [[spoiler:Zuko joins the group as the more archetypal Sixth Ranger shortly after his HeelFaceTurn, with much suspicion and distrust and at least one death threat from Katara, though he quickly manages to earn their trust.]]
** [[spoiler:Then ''three episodes later'', Suki joins the group]].
* ''WesternAnimation/CodeLyoko'':
** The gang invites William to join the team in "Double Trouble", only for him to [[NotHimself get turned evil]] half-way into the next episode, "Final Round", and not be freed until the end of Season 4, by which time the Warriors are about to destroy XANA for good. As of Season 5, ''Series/CodeLyokoEvolution'', where it is revealed that XANA barely managed to survive, William plays the trope straight, albeit after a struggle to earn the position back.
** Season 5 also introduces Laura, a TechnoWizard at least as skilled as Jérémie and Aelita, who forces her way into the team after sabotaging their ResetButton so that her LaserGuidedAmnesia wouldn't be complete. She doesn't appear regularly, but proves helpful on occasion. Aelita, however, doesn't take it kindly to have a second "Mrs. Einstein" in the picture, and the conflict between those two never goes away. [[spoiler:It finally ends with Laura turning into a SixthRangerTraitor, but it only lasts for the duration of a single episode, after which her memory is permanently erased of all things related to Lyoko.]]
* ''WesternAnimation/CodenameKidsNextDoor'' subverted the Sixth Ranger without creating a SixthRangerTraitor with Tommy Gilligan. Notably, after the episode where he almost becomes a Sixth Ranger, he becomes an outright parody Sixth Ranger tropes. He dresses in a ridiculous cape and fedora, attempts to make [[DynamicEntry dramatic entries]], tries to be mysterious (when everybody is well aware he's the AnnoyingYoungerSibling of TheSmartGuy) and refers to himself as "The Tommy."
** Numbuh 6, a quite literal Sixth Ranger, is joined in a couple episodes, being...a cyborg skunk named Bradley.
* Terra in the animated version of ''WesternAnimation/TeenTitans'' [[spoiler:(until it was revealed she was a spy for Slade).]]
* ''WesternAnimation/DannyPhantom'': The PowerTrio group is composed of Danny, Sam, and Tucker, then upgrades to include a fourth member in their ''Team Phantom'' with Jazz a little ways into Season 2, though she played SecretSecretKeeper for almost the entire series before that.
* ''WesternAnimation/XMenEvolution'': Rogue pulls a HeelFaceTurn and joins the X-Men after she realizes Mystique tricked her into joining the Brotherhood and thinking the X-Men wanted to kill her. Also Iceman becomes this after Spyke Leaves the show when he can no longer control his mutation and moves Underground with the Morlocks.
* ''WesternAnimation/YoungJustice'' has several examples:
** First comes Artemis, the sixth member of the team, who joins in the sixth episode.
** Then Comicbook/{{Zatanna}} joins in the seventeenth episode after being a RecurringCharacter.
** Finally, [[ComicBook/{{Icon}} Rocket]] joins the group [[EleventhHourRanger just in time for the season finale]].
** Bumblebee, Mal Duncan, ComicBook/WonderGirl, Lagoon Boy, Beast Boy, Comicbook/{{Robin}} III, Comicbook/{{Batgirl}}, Comicbook/BlueBeetle, Impulse, and Arsenal all join the team during the second season.
* There's a whole slew of Sixth Rangers in ''WesternAnimation/TheAvengersEarthsMightiestHeroes''. ComicBook/BlackPanther and ComicBook/{{Hawkeye}} don't join until several episodes into the first season, and then ComicBook/MsMarvel and ComicBook/TheVision join the group in the second season.
* ''WesternAnimation/ReBoot'' had Mouse as a Sixth Ranger, especially with how she didn't get along with Dot. After a few appearances her skills became invaluable to the team, and she filled in TheSmartGuy role. In the fourth season, a much more traditional Sixth Ranger joins: former villain Hexadecimal.
* [[SubvertedTrope Subverted]] in a episode of ''WesternAnimation/{{Chaotic}}'', when a character joins the main characters possessing all the traditional fifth ranger qualities,[[note]]Even filling the vacant [[TheChick Chick]] slot in the FiveManBand,[[/note]] but later [[AcquiredSituationalNarcissism leaves after gaining fame]] from [[spoiler: becoming the first person to scan a M'arrillian]].
* ''WesternAnimation/BlinkyBill'': Shifty Dingo in the second season after the dingo family performed their HeelFaceTurn. He also qualifies as TheSmartGuy of the team, probably due to being the weakest and most timid of the males.
* ''WesternAnimation/StreetSharks'', featured Moby Lick, a whale.
* ''WesternAnimation/TransformersAnimated'' has two sixth rangers. The first and more conventional one is Jazz, who joins at the end of the episode before the finale, and the second is [[spoiler: Sari, who is upgraded from TagalongKid. Gets weapons and armor installed and everything]].
** This has been a running theme throughout the whole series with Starscream in WesternAnimation/TransformersArmada and Skyfire in WesternAnimation/TransformersGenerationOne as two examples.
** Smokescreen, Wheeljack, and Ultra Magnus all fill this role in different ways in ''WesternAnimation/TransformersPrime''.
* In the first few episodes of ''WesternAnimation/{{Sixteen}}'', Caitlin tries to earn her way into the [[FiveManBand group]], but later fits right in.
* In the dinosaur-flavoured ''Franchise/TeenageMutantNinjaTurtles''-style cartoon ''WesternAnimation/ExtremeDinosaurs'', the team originally consists of four dinosaurs - T-Bone the t-rex, Spike the triceratops, Bullzeye the pterodactyl, and Stegz the...yeah. In the later half of the series, they are sent to an alternate dimension and bring back the ankylosaur Hardrock to become their fifth ranger. Except he's barely mentioned or acknowledged even after then. Hmmm.
* 1980s ''WesternAnimation/JonnyQuest'' added two extra members to the initial five character ensemble; Hardrock, an ancient stone man who became the team's second bodyguard; and Jesse Bradshaw, a DistaffCounterpart to Jonny. Hardrock joined the group during an early episode and was featured prominently for more than half of the series, but Jessie only appeared in one episode before the series was canceled. Jessie would later appear as a regular character in future incarnations of the franchise, where she would be retconned into "Jessie Bannon" (Race's daughter), but Hardrock never returned following the 80s version.
* ''WesternAnimation/DrawnTogether'' has two subversions: Sid from "[[SpinoffBabies Drawn Together Babies]]" and Excludie from "Lost In Parking Space" (the first part) are both presented as ninth housemates (and RememberTheNewGuy characters at that), but Sid sleeps on his stomach and got [[MeaningfulName sudden infant death]] syndrome, and Excludie was excluded from everything, even the episodes prior to his only appearance. 'Steve from Long Island' acts like this as well, only appearing in two episodes seemingly only to balance out what ever bizarre faction split the contestants had created at the time.
* ''WesternAnimation/SouthPark'': [[TheHeart Butters.]] He's been around as a background character since the show's beginning, and gradually increased in prominence, but ascended to protagonist status during Season Six. Unlike other instances of this trope, all five leads are rarely seen together since the boys are not a genuine FiveManBand, but Butters has had almost as many character-centric A-Plots as Stan, and Kyle by this point in the series, and will oftentimes pair off with one of the boys for an adventure ("My Future Self 'n Me," "Super Fun Time," "Sexual Healing," "Going Native", etc.) as their foil.
** The boys even had an audition to see who would be Kenny's replacement after he was KilledOffForReal; Tweak was the initial winner but the writers found Butters' innocence an endearing foil to the rougher boys, and that he had more potential for CharacterDevelopment.
* ''WesternAnimation/AdventuresOfTheGalaxyRangers'': Though he was technically an [[{{Ambadassador}} Ambassador]], Zozo was in a surprising amount of episodes, often acting as an auxiliary, [[BadassNormal non-powered]] Ranger. He was even ''addressed'' as "Ranger Zozo" several times, implying he was at least an honorary, if not full, Ranger in his own right. His fellow ambassador, Waldo, was in fewer episodes, and more a NonActionGuy - but was still capable of self defense. The show tried to make Buzzwang into a "fifth Ranger," but he wound up being TheScrappy instead.
* In ''WesternAnimation/{{Futurama}}'' Kif Kroker is the team's Sixth Ranger, having come lately to the main Planet Express ensemble by means of dating TheChick, Amy. Later, Cubert also fills the role. As does Scruffy, the janitor.
* ''Franchise/TheLandBeforeTime'' TV Series had two, Chomper, the baby Sharptooth from the second film, and Ruby, a 'Fast Runner' who was entrusted with Chomper's safety by his parents. Both came to live in the valley to escape the series BigBad Red Claw.
* John Thunder and Rex Charger from ''WesternAnimation/{{Centurions}}''.
* ''WesternAnimation/SpiralZone'' had four Sixth Rangers, two each for the heroic Zone Riders (Ned Tucker and Ben Davis) and the evil Black Widows (Crook and Rawmeat).
* ''WesternAnimation/RamboTheForceOfFreedom'' added two new heroes (Chief and T.D. Jackson) and three new villains (Dr. Hyde, X-Ray and Snake Bite) in later episodes.
* ''WesternAnimation/{{Recess}}''
** Gus became the sixth ranger to the other main five characters, and a rare example by joining in the second episode.[[note]]Which is actually [[ThreeShorts the second of two shorts]] of the first broadcast.[[/note]]
** Cornchip Girl later on became an unofficial seventh ranger to the main gang in the later seasons.
* Mike and Penny's Popples on ''WesternAnimation/{{Popples}}'' might count. They came in halfway through the series, and seemed to hang out with them most of the time.
* In Season 2 of ''WesternAnimation/ShirtTales'', Kip Kangaroo is introduced as the sixth member.
* ''WesternAnimation/GarfieldAndFriends'': Aloysius Pig is this according to Creator/MarkEvanier. He was even supposed to [[MissingEpisode show up in a fourth episode, but it was later canned]] due to the show being ScrewedByTheNetwork.
* In ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** In the ''[[WesternAnimation/MyLittlePonyEquestriaGirls Equestria Girls]]'' movie, Twilight Sparkle has [[spoiler: Sunset Shimmer]] join her group of human friends at the end of the movie, though she isn't seen fulfilling the role until [[WesternAnimation/MyLittlePonyEquestriaGirlsRainbowRocks the sequel]], where she and [[AscendedExtra DJ PON-3]] play important roles in defeating the Dazzlings. The third [[WesternAnimation/MyLittlePonyEquestriaGirlsFriendshipGames film]], removes Twilight to have [[spoiler:Sunset]] become the leader of the Rainbooms from that point on, with a ''new'' sixth ranger in the form of [[spoiler: the human world's Twilight]] joining the group at the end of the movie. Both characters also fit the [[HeelFaceTurn foe-becomes-friend formula]], though the former more so.
** [[spoiler: [[DarkMagicalGirl Starlight]] [[ArcVillain Glimmer]], the BigBad of Season 5]], does a HeelFaceTurn and joins the Mane Six in the Season 5 finale, with the following season having her PromotedToOpeningTitles and given a new place to live in the Friendship Castle.
* Happened in universe on the ''WesternAnimation/{{Animaniacs}}'' ''WesternAnimation/PinkyAndTheBrain'' segment "Puppet Rulers", when on the Treckle and Meaney show, two new characters called "Big Ears" (Pinky) and "Noodle Noggin" (Brain) joined the show.
* Pumyra in ''WesternAnimation/{{Thundercats 2011}}''.
* ''WesternAnimation/ScoobyDooMysteryInc'' jumps around with this. When [[spoiler:Daphne temporarily leaves the group]], Hot Dog Water/Marcie acts as this until she's kicked out [[spoiler:when Daphne returns]]. For a little while, Nova sticks around with the group, but this also doesn't last.
* In the second season of ''WesternAnimation/SonicTheHedgehog'', Dulcy the Dragon becomes part of the Freedom Fighters at the very start of the season, though [[RememberTheNewGuy we're not shown how exactly]]. A more straighter example comes from Tails, who joins in at the [[IncrediblyLamePun tail end]] of the series.
* Normally, the ''WesternAnimation/PhineasAndFerb'' gang consists of the title characters, Isabella, Buford, and Baljeet. Irving is introduced in the second season as the president of the Phineas and Ferb fan club and is sometimes accepted as the sixth ranger.
* The series based on ''WesternAnimation/DorasExplorerGirls'', ''Dora and Friends: Into The City'', includes a new male character named Pablo.
* Kayo in ''WesternAnimation/ThunderbirdsAreGo'' is this. Unlike her 1960s counterpart Tin-Tin, she has her own Thunderbird, called ''Thunderbird S'' (the S stands for shadow), which she receives at the end of the second episode.
* While [[spoiler: Stanford Pines]] of ''WesternAnimation/GravityFalls'' fame is notable for having been elaborately foreshadowed and having had a profound impact on the plot and the main characters by way of the journals he left behind, he effectively becomes this to the Mystery Shack crew once he shows up in person. Though not necessarily a subversion, his addition to the cast proves a tricky example - while he ostensibly wants to stop the impending apocalypse as much as anyone, slips into the role of the BigGood that he already sort of filled through his writings and completes the Pines family's FourPhilosophyEnsemble as its Apathetic member, the circumstances of his arrival--along with the ensuing backstory reveal about his damaged relationship with his brother--end up disrupting the established team dynamics and bringing the other family members' insecurities to the forefront.
* ''WesternAnimation/StevenUniverse'':
** Steven's best friend [[TokenHuman Connie]]. She starts as a friend who is interested in the Crystal Gems and their activities, but undergoes [[CharacterDevelopment character development]] and [[TookALevelInBadass begins taking combat lessons from Pearl]] in order to better help Steven. She's now a respected and important ally of the Crystal Gems who acts as a reserve member for missions.
** [[spoiler: Former villain Peridot]] who underwent a HeelFaceTurn after becoming close with Steven and the other Gems during [[spoiler:the construction of the Gem Drill]] and learning the value of Earth.
** It was implied that [[spoiler:Bismuth]] would join the team as well in the promos leading up to her appearance, [[spoiler:but it was revealed that she is a ''former'' member of the Crystal Gems whose lethal methods were at odds with the others]].
* ''WesternAnimation/RegularShow''.
** Averted with Thomas. He debuts in the show's fourth season as the park's new intern and, at first, appears as if he's going to fill the role of 8th ranger. However, he quickly devolves into background/recurring character and rarely got involved with the other guys' antics during his time at the park. WordOfGod says this was because "[[RealityEnsues no one ever hangs out with the intern]]".
** Benson serves as an in-universe example of this in the episode "Format Wars II", when he is revealed to be the fifth Disc-Master alongside Mordecai, Rigby, Hi Five Ghost, and Muscle Man.
** After being a supporting character for a majority of the series, Eileen becomes [[AscendedExtra the 8th ranger in the final season]], as she [[spoiler: ends up stranded in outer space with the Park Crew.]]
* At the start of season 2 of ''WesternAnimation/{{Jem}}'', two of these characters were introduced. When Shana temporarily left Jem And The Holograms to persue her fashion designer career, her bandmates scouted for a new drummer. Raya won their contest and became their new drummer, with Shana taking up a new instrument. The Misfits tried (and failed) to outshine Jem's band by getting their own new member, Jetta who was a saxophonist but who usually played bass guitar. Raya never got any spotlight past her introduction episodes however Jetta became on par with the rest of the Misfits.
* ''WesternAnimation/BooBoomTheLongWayHome'' has two of these who temporarily join the main group of 6 characters (thus technically making them 'seventh rangers'):
** The first one is Mr. Rossellini, an elderly school teacher who joins the group in episode 7, along with his dog, until episode 10, when he hurts his ankle and is thus [[IWillOnlySlowYouDown forced to stay behind]] at the castle of a friend to recover. [[PutOnABus He is not seen again afterwards]], but he is mentioned occasionally.
** The second one is Viola, a teenage StreetUrchin who joins them from episode 8 till episode 12. At first she borders on a SixthRangerTraitor who is motivated by {{greed}} and not afraid to doublecross her friends if it benefits her, but she gets better. After meeting and falling in love with Mario, a member of the Italian resistance, Boo-Boom urges her to stay with him and his resistance group. Unlike Mr. Rossellini, she comes BackForTheFinale in episode 25 to assist Boo-Boom in rescuing his parents.
* The eccentric artists Gusto Gummi in ''WesternAnimation/AdventuresOfTheGummiBears'', he’s not one of the original six Gummi Bears. He was discovered by accident as a shipwrecked in an Island in the middle of the Ocean and become later a recurring character, but do not appears in every episode only when it was plot-convenient. Of course, other surviving Gummi Bears are discovered in later seasons.
* In ''WesternAnimation/VoltronLegendaryDefender'', unlike the [[Anime/{{Voltron}} original series]], Allura is the sixth hero of the team but doesn't fall into this trope as she's part of the team from the start, while Shiro is TheLeader in season 1 and 2 until Keith takes over for season 3 before handing it back to Shiro in season 4. However, Team Voltron would have a true Sixth Ranger in season 4, when Pidge's brother Matt joins the team, given that he becomes literally the sixth hero as Keith joined the Blade of Marmora during the season.
* Poof in ''WesternAnimation/TheFairlyOddParents'' in the sixth through eighth seasons. The ninth season introduced Sparky and the tenth introduced Chloe, causing Poof to get Main/PutOnABus due to having difficulty with too many characters to work with, though he returned in the episode "Certifiable Super Sitter". Sparky was put on a bus though due to him being Main/TheScrappy.

[[folder:Real Life]]
* The Iroquois Confederacy (originally the Mohawk, Seneca, Oneida, Onondaga, and Cayuga nations) became known as the "Six Nations" after the Tuscarora joined.
* Sioux dialects: There are [[ArcNumber four]]. In Teton, in some places one uses an L, hence Lakota. However, in Santee and Yankton, one uses a D. While the N-using Assiniboine were [[FourIsDeath the enemies of the Sioux]], making for one more, the ''true'' sixth, well, fifth ranger, is Stoney, much farther to the northwest, which also uses an N. This wouldn't be so bad, except that their word for "ally" is Lakota. [[JapaneseRanguage No version uses an R, though.]]
* In UsefulNotes/TheUnitedStates, Vermont was the first state to join the Union after the original 13 colonies. 36 others would follow. However, some people only regard Alaska and Hawaii, the two non-contiguous states, as this trope, since they were both added in 1959 (within the lifetime and memory of older Americans) long after the 48th contiguous state, Arizona, was added in 1912. Still others would say the [[UsefulNotes/WashingtonDC District of Columbia]] and Puerto Rico. They are not states (the former is the federal capital district and the latter is an unincorporated territory), but they are frequently included with the states in statistical reports released by the federal government, and DC is informally considered a state in all but name. Of all the US's non-state regions, these two are the most populous (moreso than some actual states, for that matter) and have the most proponents for actual statehood.
* The [[http://en.wikipedia.org/wiki/Six_Nations_Championship Five Nations rugby union tournament]] later added a sixth team, Italy, to the existing five of England, Scotland, Wales, Ireland and France. It was renamed the Six Nations. France is actually a Sixth Ranger too, as the tournament used to be called the Home Nations, a name referring to the four countries of the UsefulNotes/UnitedKingdom. In the same sport, Argentina became the Fourth Ranger in 2012 in what used to be the Tri Nations (Australia, New Zealand, South Africa); the tournament was renamed [[http://en.wikipedia.org/wiki/The_Rugby_Championship The Rugby Championship]] when ''Los Pumas'' joined.
* Penn State became an Eleventh Ranger to [[UsefulNotes/CollegiateAmericanFootball the Big Ten]]; they redesigned their logo to hide an "11" in there without having to change their name. When Nebraska joined, the logo changed[[note]](instead of hiding "11", it now reads "[=B1G=]" in such a way that the last two characters resemble "10")[[/note]] but the name didn't.
* Whenever you have a functional team of your coworkers and a new person is hired without anyone leaving, they become this.
* Many examples in international politics and warfare. A fairly famous example being the United States in both UsefulNotes/WorldWarI (war began in 1914, US joined in 1917) and UsefulNotes/WorldWarII (Britain and France declaring war on Germany in 1939, the US joined at the end of 1941), leading to a bit of a [[NeverLiveItDown joke between Europeans and Americans]]; the former insist that the US is always LateToTheParty, while the latter complain that they're the ones who have to do all the work. [[VitriolicBestBuds It's all in good fun]], though (usually). The Soviet Union can be considered a Sixth Ranger in the latter as well, due to them also joining in '41 (earlier than the U.S. by way of MistreatmentInducedBetrayal[[note]]The Soviets partitioned off Eastern Europe with the Nazis in the early years, whereas FDR was sympathetic to the Brits but didn't have a ''casus belli'' until Japan attacked[[/note]]). Unfortunately, they're barred from the joke[[note]]Despite ''very'' heavy casualties against Germany, more than the Western Powers ''combined'' in that front, though they sat out of the Pacific War until the {{Eleventh Hour|Ranger}}[[/note]] due to disputes about the spoils and... [[UsefulNotes/ColdWar other matters]].
* In Major League Baseball after the [[AllStarCast All Star Break]] teams with no hope of making the playoffs will often trade their most expensive talent to teams that are still in contention. Film/{{Moneyball}} popularized the term "Rent-a-Star", but they serve the same role as Sixth Rangers.
* [[BigApplesauce New York City]] has five boroughs. UsefulNotes/NewJersey sometimes gets called the Sixth Borough, given how much of it falls within its sphere of influence. Occasionally, the moniker is limited to just Hudson County, which is right across the Hudson River from Lower Manhattan.
* In UsefulNotes/AustralianRulesFootball, the Victorian Football League began in 1897 with eight teams (Carlton, Collingwood, Essendon, Fitzroy, Geelong, Melbourne, South Melbourne and St Kilda). The Australian Football League (which it evolved into) currently has eighteen:
** Richmond and University joined in 1908 (although University only lasted until 1915)
** Footscray (now the Western Bulldogs), Hawthorn and North Melbourne joined in 1925, and the league remained at 12 teams for over 50 years (with South Melbourne relocating to Sydney in 1982)
** Brisbane and the West Coast Eagles joined in 1987
** Adelaide joined in 1991
** Fremantle joined in 1995
** Port Adelaide joined in 1997
** Gold Coast joined in 2011
** Greater Western Sydney joined in 2012
* Expansion teams in closed-shop sports leagues (i.e., those in North America that don't practice promotion and relegation), whether granted and created from scratch or imported from the merging of a rival league.
* Usefulnotes/{{Basketball}} subverts this with the "Sixth Man", which is the title of a team's primary substitute.[[note]][[DontExplainTheJoke Basketball teams are limited to 5 players on the court]].[[/note]] Such subs are on the court just about as much as any of the starters, and so the chemistry between the Sixth Man and the starters is just as important as the chemistry between the starters themselves.
%%* Ireland is considered to be this to the rest of the "Anglosphere" [[note]] The UK, the US, Canada, Australia, and New Zealand [[/note]]
* The origins of the term "[[https://en.wikipedia.org/wiki/Fifth_column Fifth Column]]" combine this Trope with TheMole: General Mola, of the Nationalist (Fascist) faction of The UsefulNotes/SpanishCivilWar, led 4 Columns of troops against Republican (Communist)-held [[https://en.wikipedia.org/wiki/Siege_of_Madrid Madrid]] and [[DiscussedTrope declared that]] Nationalist Sympathizers within the city would form a "Fifth Column" and help him take the city. Given that the city held for over 2 years, this example was ineffectual at best.
* Any time a new fossil species is discovered that falls within an established clade of organisms, yet its traits stretch the boundaries of what that clade was previously presumed to have been like, it's this trope for paleontologists, kicking off controversy and bickering until its significance is either debunked or embraced. Particularly noteworthy is ''Deinonychus'', the first genus of [[RaptorAttack velociraptor-style therapods]] to be described, whose features plainly fell within that group of carnivorous dinosaurs, yet also shattered older preconceptions about dinosaurs' agility and metabolic rates.