There are so many [[MythologyGag references]] to previous ''Franchise/{{Gundam}}'' shows in this series, that it has warranted a page of its own. Comes expected with a ContinuityCavalcade of an anime series...
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[[foldercontrol]]

[[folder:Look-a-likes]]
Main Characters:
* Mr. Ral: A [[Anime/MobileSuitGundam Ramba Ral]] look-a-like who's a regular at Sei's store.
** He's voiced by Ral's voice actor, Creator/MasashiHirose.
** Has a collection of Gouf models, Ramba Ral's iconic ''Anime/MobileSuitGundam'' mech.
** Gunpla battlers address him with Ramba Ral's ''Anime/MobileSuitGundam'' rank of Lieutenant.
** In Episode 5, he paraphrases one of Ramba Ral's famous lines.
--->'''Mr. Ral:''' ''This is no Best Mecha Collection, boy! No Best Mecha Collection!''
** Episode 14 reveals that Mr. Ral is 35 years old. 35 years before the first airing of ''Build Fighters'' was 1979, when ''Anime/MobileSuitGundam'' first premiered. Which is also Ramba Ral's age.
** Takeshi Iori outright addresses him as "Ramba" in Episode 24.
* Takeshi Iori: Sei's father looks like growth-up version of Shiro Kyoda, the protagonist of ''Plamo-Kyoshiro'' manga. Like Kyoda, he used the original RX-78 and later upgraded to the PF-78 Perfect Gundam.
* Chairman Mashita, the head of PPSE, looks suspiciously similar to Amuro's father [[Anime/MobileSuitGundam Tem Ray]].
** Introduced as the creator of the Plavsky system in episode 10. (similar to Tem designing the Gundam.)
* Gunpla Mafioso C: recurring antagonist who's a look-a-like of Clamp, Ramba Ral's righthand man in ''Anime/MobileSuitGundam''.

Other Cameos
* Marasai Gunpla team: [[Anime/MobileSuitZetaGundam Jerid and Kacricon]] look-a-likes.
** pilot a Marasai at the beginning of Episode 4.
** Are eating at the Kousaka restaurant in Episode 9.
* GN-X Gunpla pilot: A [[Anime/MobileSuitGundam00 Patrick Colasour]] look-a-like.
** GN-X pilot in the GN-X vs Asshimar fight Reiji watches in Episode 6.
** A later kit release revealed that he is actually Patrick [[HappilyMarried Mannequin]], an Irish Gunpla Fighter who regularly places in the World Championships. And frequently loses because he relies more on luck than skill.
* Tatsuzo the Burning: a [[Anime/MobileSuitGundam Dozle Zabi]] look-a-like.
** land shark who pilots the mobile armor Apsalus III in episode 7.
* Alice Imai: An [[Anime/MobileFighterGGundam Allenby Beardsley]] look-a-like.
** pilots a Noble Gundam in the girls Gunpla tournament in Episode 9.
* [[Anime/MobileSuitGundamWing Trowa Barton]] look-a-like.
** Background character at the fancy party in episode 10.
* Geymalk pilot: [[Anime/MobileSuitVictoryGundam Junko Jenko]] look-a-like with [[Anime/MobileSuitGundamZZ Chara Soon's]] voice.
** fight Sei and Reiji with a Geymalk from ''Gundam ZZ'' in episode 10.
* [[Anime/MobileSuitGundam Black Tri-Star]] gunpla team.
** Shot down by Meijin Kawaguchi while piloting [[Anime/MobileSuitGundamSEEDDestiny DOM Troopers]] in episode 11.
* [[Anime/MobileSuitGundamUnicorn Suberoa Zinnerman]] look-a-like.
** Shot down by Ricardo Fellini while piloting a Zaku Tank in episode 11.
* [[Anime/MobileSuitGundam Hayato Kobayashi]] Look-a-like
** Part of the Team NTR. Double as CMOF as Hayate had net one of the most beautiful girl in Gundam franchise, Frau Bow, believed by some to still be harboring feelings for Amuro Ray... and this implied even Fellini has a shot.
* [[Anime/MobileSuitGundam00 Mrs. Halevy]] (Louise Halevy's mother) look-a-like.
** Sitting in the audience during the battle royale in episode 12
* [[OneLetterName C]], the Gunpla "hitman" from episode 14
** looks exactly like Clamp, Ramba Ral's right hand man in the original ''Anime/MobileSuitGundam''.
* A blonde, female [[Anime/MobileSuitGundamWing Heero Yuy]] look-a-like
** Mercurius pilot that teams up with Reiji, Sei, and Mao during the 3-on-3 matches in episode 14.
* [[Anime/MobileSuitVictoryGundam Fonse Kagatie]] look-a-like.
** Piloting a V2 Gundam repainted to look like the [[VideoGame/SDGundamGGeneration Zanspine]], complete with red wings of light, in Sei and Reiji's 3-on-3 match during episode 14.
* A brown-haired [[Anime/MobileSuitGundam00 Soma Peries]] look-a-like
** Shows up piloting a Gundam Kyrios during Build Strike's race in episode 14. The Kyrios is painted red like Soma's GN Archer from season 2.
* A black-haired [[Anime/MobileFighterGGundam Chibodee Crocket]]
** Piloting a Gundam Maxter during Build Strike's race in episode 14.
* [[Anime/MobileSuitGundam00 Sergei Smirnov]] can be seen in the crowd during episode 14. Perhaps cheering Soma look-a-like?
* A [[Anime/MobileSuitZetaGundam Sarah Zabiarov]] look-a-like
** Participates in Aila's race in episode 14.
* A [[Anime/MobileSuitGundamCharsCounterattack Gyunei Guss]] lookalike pilots a Geara Doga (with the Jagd Doga's funnels) against Aila in episode 15.
* A [[Anime/MobileSuitZetaGundam Kamille Bidan]] look-a-like is at the bar Felini meets Kirara in episode 15.
* [[Anime/MobileSuitGundam00 Ikeda (From Katharon)]], a black haired [[Anime/MobileSuitGundam00 Kinue Crossroad]], and a blond haired [[Anime/TurnAGundam Fran Doll]] appear in Rinko's press conference ImagineSpot in episode 16.
* A [[Anime/MobileSuitZetaGundam Fa Yuiry]] look-a-like can be seen walking by when Aila's eating ice cream in episode 16.
* Nils' opponent at the start of Episode 19 is "[[FanNickname Black Tieria]]" from [[ShowWithinAShow the Celestial Being movie]] seen in ''Anime/Gundam00AWakeningOfTheTrailblazer''; his Gunpla is a Virtue Gundam painted in the colors of the Virtue Physical from the prequel manga ''Gundam 00P''.
* [[Anime/MobileSuitGundam00 Kati Mannequin, Sumeragi Lee Noriega and the three OverFlag task force]] look-a-likes can be seen drinking in the restaurant Fellini and Mihoshi are eating at in episode 19.
* A [[Anime/MobileSuitGundamZZ Roux Louka]] look-a-like is sitting next to China at the end of the Star Build Strike vs. Sengoku Astray fight in episode 19.
* There's a [[Anime/MobileSuitGundamSEED Kira Yamato]] look-a-like sitting next to Mao and Nils during the Aila vs. Reiji fight.
* A [[Anime/AfterWarGundamX Tex Farzenberg]] look-a-like is the elder Mackenzie's doctor in episode 22.
* Dozens in the ''Episode 23'' Gunpla festival:
** [[Anime/MobileSuitGundamCharsCounterattack Hathaway Noa and Quess Paraya]] along with [[Anime/MobileSuitGundam00 Lichtendahl Tsery and Cristina Sierra]] are two couples at the festival.
** [[Anime/MobileSuitGundam Kai Shiden and Miharu Ratokie]], [[Anime/MobileSuitGundamF91 the Ronah family]], and [[Anime/MobileSuitVictoryGundam Odelo Henrick and Warren Trace]] are all building Gunpla.
** A child [[Anime/MobileFighterGGundam Domon Kasshu]] is building a ''God/Burning Gundam'' with his father, mother, and brother Kyoji.
** [[Anime/MobileSuitZetaGundam Shinta, Qum and Henken]] are building a Hi-Zack together.
** [[Anime/MobileSuitVictoryGundam Uso Ewin]] shows off a V2 Gundam he built to his parents.
** [[Anime/MobileSuitGundam0080WarInThePocket Alfred Izuruha]] is in a Gunpla battle, being cheered on by [[Anime/MobileSuitGundam0080WarInThePocket Bernie Wiseman and Christina Mackenzie]].
** [[Anime/MobileSuitZetaGundam Haman Karn]] is walking around with a young [[Anime/MobileSuitZetaGundam Mineva Lao Zabi]], both in their ''Zeta Gundam'' attire.
** [[Anime/MobileSuitGundam Char Aznable]], in his casual suit from the Gihren Zabi speech scene in ''MS Gundam'', tells Takeshi Iori he's an idiot. [[Anime/MobileSuitGundam Lalah Sune]] then shows up with ice cream for her and Char.
** The referee of the free Gunpla Battle competition is [[Anime/MobileFighterGGundam Rain Makimura]], in her pilot suit getup.
** [[Anime/ModelSuitGunplaBuildersBeginningG Haru Irei and friends]] appear in a shot behind Kirara.
** [[Anime/MobileSuitZetaGundam Four, Rosamia]], [[Anime/MobileSuitVictoryGundam Duker Iku, Renda de Paroma]], and [[Anime/MobileSuitGundamZZ a Puru]] are wandering around together, with [[Anime/AfterWarGundamX Carris Nautilus]] stretching in the foreground.
** [[Anime/MobileSuitGundam Katz, Letz, and Kikka]] are riding a Haro-themed teacup ride.
** The [[Anime/AfterWarGundamX Frost Brothers]] can be seen on a stage at one point.
** [[Anime/MobileSuitGundam00 Lasse Aeon]] is driving the truck Takeshi Iori hitchhikes to the festival on.
** [[Anime/MobileSuitGundamUnicorn Banager Links and Audrey Burne]] are arm in arm, near the 1/1 Char Anzable Zaku.
* In Episode 25, [[Anime/MobileSuitGundam00 Setsuna and Lockon]] can be seen from behind, just in front of China [[spoiler:going to watch the 8th Gunpla Championship Qualifiers.]]
* In the prequel manga ''Build Fighters: Amazing'', the main characters from the manga ''Gunpla Builders Beginning D'', including goth-lolita styled Saki Mishima, show up as Julian's opponents in the Gunpla Academy.
* In the OVA ''GM's Counterattack'': a [[Anime/MobileSuitVictoryGundam Neneka Niboru]] look-alike distracts Mao, while wearing the exact same swimsuit from the infamous ''Victory'' scene.

Clothes:
* Sei always imagines himself wearing [[Anime/MobileSuitGundamSEED Kira Yamato's]] Earth Alliance pilot suit.
* Mao always imagines himself wearing [[Anime/AfterWarGundamX Garrod Ran's]] civilian clothes.
* Reiji (and later in the series, Meijin Kawaguchi) has a pair of sunglasses based on Char Aznable / Quattro Bajeena's from ''Anime/MobileSuitZetaGundam''.
* Mihoshi's civilian outfit in episode 4 is the one Marida Cruz wore in the 1st episode of ''Anime/MobileSuitGundamUnicorn''.
** Kirara's pink hair and star accessories in episode 4 resemble [[Anime/MobileSuitGundamSeedDestiny Meer Campbell's]].
** During reception party, she sported a hime cut and qipao-inspired gown that made her look like Wang Liu Mei. She sported a similar look with her normal hair when she's relaxing in ep. 15.
* Mao wears the red tuxedo and bow-tie of the ''[[Anime/MobileFighterGGundam G Gundam]]'' fight announcer during the fancy party in episode 10.
* In episode 3, the "veteran" Gundam fans dress in Zeon's military costumes. Except one guy, who has a [[Anime/MobileSuitVictoryGundam Zanscare Empire Uniform]] instead.
* In episode 7, the pilot of the Double X Gundam is cosplaying [[Anime/AfterWarGundamX Jamil Neate]].
* At TheStinger of episode 23, Meijin Kawaguchi sports a red scarf/muffler and wears it the same way as [[Anime/MobileSuitGundam00 Setsuna]] did.
* [[spoiler: In episode 24, Baker is wearing an EFSF uniform and looks like [[Anime/MobileSuitGundam Sayla Mass]]]].
[[/folder]]


[[folder:Quotes]]
* President Yuuki paraphrases the opening line of ''[[Anime/MobileSuitGundam Tobe Gundam]]'' in episode 2.
-->'''Yuuki''': MOEAGARE! MOEAGARE!! MOEAGARE!!! GUNPLAAAAAA!!!
* Sei's father, Takeshi, invokes the opening theme title of ''Anime/MobileSuitGundam'' in one of Sei's dreams.
-->'''Takeshi:''' Tobe! Gundam
* When Build Strike Full Package shoots down the opposing Hambrabi in episode 3, reactions include a famous line originally from ''Mobile Suit Gundam''.
-->'''Crowd:''' With only one shot!?
* Sei quotes the most famous lines from ''Anime/AfterWarGundamX''.
-->'''Sei:''' Th-The moon is...The moon is coming out.
* In Episode 5, Mr. Ral paraphrases one of Ramba Ral's famous lines.
-->'''Mr. Ral:''' ''This is no Best Mecha Collection, boy! No Best Mecha Collection!''
* Aila quotes Lalah Sune at the end of episode 6.
-->'''Aila:''' The white one will win.
* Sei and Reiji recites Amuro's famous words from ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]'' in Episode 7.
-->'''Sei:''' Our Gunpla...
-->'''Reiji''': ...is not just for show!
** While cleaning up graffiti, Mao hums part of ''[[Anime/AfterWarGundamX Gundam X]]'''s 1st opening, "Dreams".
* Episode 11 has an Ashtron pilot yell, "Nii-san!" after a Gundam Virsago pilot gets shot down.
* Episode 12 has an oversleeping Mr. Ral note: "In the middle of a fight, Ral forgot to fight!"
* In Episode 15, Fellini declares "[[Anime/MobileFighterGGundam I'm going to grasp victory with this hand of mine!]]"
* A FreezeFrameBonus in Episode 18: the "tweet" about Meijin isn't just PunnyName applied, but also served as a subtle ShoutOut to Kai Shiden's [[Memes/{{Gundam}} infamous letter]] from ''[[Anime/MobileSuitZetaGundam Zeta Gundam]]''.
-->"Is the Kampfer Amazing because he's a Meijin?"
* Episode 20 has Sei quote Amuro Ray's famous lines from the infamous [[GetAHoldOfYourselfMan/{{Gundam}} Bright Slap]] scene (comparison between both scenes can be found [[http://i.imgur.com/NKgMoeP.jpg here]]). That was just the icing on the Offscreen Moment of Funny for the said ep: after the hypnosis session, Nils mentions that Sei had quoted all of Amuro's lines from ALL 43 EPISODES of [[Anime/MobileSuitGundam the original]] during his hypnotized state.
** Same episode, Fellini paraphrasing Amuro from ''[[Anime/MobileSuitGundamCharsCounterattack Char's Counterattack]]''.
--->'''Fellini:''' The Italian Dandy's not just for show!
** In the same episode, he says [[spoiler:"Tag along on my self-destruct show!"]], combining lines uttered by [[Anime/MobileSuitGundamWing Duo Maxwell and Trowa Barton]] on the same subject.
* Episode 21 has Kawaguchi's reaction to [[spoiler:Reiji and Aila's "Newtype Moment"]]:
--->'''Kawaguchi:''' [[Anime/MobileSuitGundamCharsCounterattack Is this the light of the human heart?!]]
* Episode 22, Kawaguchi has a variant of Setsuna's "This is our Gundam!"
--->'''Kawaguchi:''' [[Anime/MobileSuitGundam00 This is my...determination!]]
* The final line in the next episode previews is always a paraphrase of a line from a previous ''Franchise/{{Gundam}}'' series.
** Episode 1 is a paraphrase of "Who will survive" from ''Anime/MobileSuitGundam'':
--->'''Sei:''' Will I be able to survive school?
** Episode 1 is a paraphrase of "You will see the tears of time." from ''Zeta'':
--->'''Sei:''' "I'm seeing the tears of time"
** Episode 3 is a paraphrase of "You will see the hell of the battlefield." from ''ZZ'':
--->'''Sei:''' "You'll see the hell of a Gunpla Battle!
** Episode 4 is a paraphrase of "You do not know the true meaning of Gundam yet." from ''Char's Counterattack'':
--->'''Sei:''' You still don't know the true Gunpla Battle.
** Episode 5 has Rinko narrating like [[TheCaptain Murrue Ramius]] (who was [[ActorAllusion also]] voiced by Creator/KotonoMitsuishi) from ''Gundam SEED'':
--->'''Rinko:''' To face the true battle, fly Gunpla!
** Episode 6 has Sei and Reiji quoting ''[[Anime/MobileFighterGGundam G Gundam]]''.
--->'''Sei & Reiji:''' Gunpla Battle, Ready, GO!
** Episode 7 is a paraphrase of the song "Soldiers of Sorrow" from ''Anime/MobileSuitGundam'':
--->'''Sei:''' What will you bet and what will be left behind?
** Episode 8 has China narrating like Shakti Kareen from ''V Gundam''.
--->'''China:''' Don't miss it!
** Episode 9 has Sei using an episode title from ''Gundam X'':
--->'''Sei:''' I feel like I'm dreaming!
** Episode 10 has Sei quoting Heero Yuy's CatchPhrase from ''[[Anime/MobileSuitGundamWing Gundam Wing]]'':
--->'''Sei''': Mission Accepted.
** Episode 11 has Sei using a paraphrase of next episode preview "A rebirth by destruction has begun" line from ''[[Anime/MobileSuitGundam00 Gundam 00]]'':
--->'''Sei''': A destruction by Gunpla has begun.
** Episode 15 is a paraphrase of the "What is it that the lovers seek?" tagline from ''Mobile Suit Zeta Gundam: A New Translation 2 - Lovers''.
--->'''Sei:''' What is it that the fighters seek?
** Episode 16 has Mao referring to ''G Gundam'' again.
--->'''Mao:''' Ready, GO!
** Episode 23 has Sei repeating Domon's "Roar, Shining Finger!" battle cry from ''G Gundam''.
--->'''Sei:''' Roar, Build Knuckle!

[[/folder]]

[[folder:Locations]]
* The battle arenas are based on settings from previous ''Franchise/{{Gundam}}'' series.
** The forest arena in episode 1 and is based on the cherry forest from the first episode of ''Anime/MobileSuitVictoryGundam''.
** The desert arena in episode 1 is based on the Texas colony from ''Anime/MobileSuitGundam''.
** The city arena in episode 2 is based on the colony drainage ditch where the climatic battle occurs in ''Anime/MobileSuitGundam0080WarInThePocket''.
** The desert arena in episode 3 and 4 is based on the Taklamakan Desert from the Ramba Ral arc in ''Anime/MobileSuitGundam''.
** Yuuki's training arena in episode 6 is modeled on Jaburo, the Federation's headquarters in ''Anime/MobileSuitGundam''.
** Kampfer Amazing's training arena in episode 8 is baded on Belfast from ''Anime/MobileSuitGundam''.
** Nils and Greco's moon arena in episode 8 is based on the location Kou Uraki battles the Val-Walo in ''Anime/MobileSuitGundam0083''.
** The canyon arena in episode 15 is based on the Great Canyon[[note]]itself just a different/corrupted name for the real-world Grand Canyon[[/note]] from ''Anime/MobileSuitGundam''.
** The space arena in episode 16 is based on Solomon Space Fortress.
** The ruins arena in episode 18 is based on Seattle, where Garma's last stand took place in ''Anime/MobileSuitGundam''.
** Episode 19's Castle battlefield is the Gundam Castle from the old ''SD Gundam Sengokuden'' line.
** Episode 20 gives us the snowy mountains from ''Anime/MobileSuitGundamSEEDDestiny'''s battle between the Freedom and Impulse Gundams.
** Episode 21's forest arena's flower field is based on that found in the ending of ''Anime/Gundam00AWakeningOfTheTrailblazer''.
* The... asteroid thing that appeared at the end of Episode 24 is shaped exactly like A Baoa Qu.
** In the next episode, the corridor leading to the core transforms into the [[Anime/MobileSuitZetaGundam Colony Laser]], which proceeds to fire a WaveMotionGun.
* In Sei's dream in episode one, the Build Strike launches from [[Anime/MobileSuitGundam0083StardustMemory The Albion]].
[[/folder]]

[[folder:Gunpla]]
* Build Strike Gundam Full Package: Combines [[Anime/MobileSuitGundamSEED Strike Gundam]] with a variant of the [[Anime/MobileSuitGundamSEEDDestiny Akatsuki's Oowashi pack]].
* Zaku Amazing: a [[Anime/MobileSuitGundam High-Mobility Type Zaku II]] with tank models parts for a Heavy-Armor Aesthetic similar to [[Anime/ModelSuitGunplaBuildersBeginningG Super Zaku F2000]].
* Wing Gundam Fenice: a [[Anime/MobileSuitGundamWing Wing Gundam]] customized with FashionableAsymmetry. Its mismatched eyes and left-arm 'beam mantle' are a shout out to the [[Anime/MobileSuitGundam00 Exia Repair]].
** Its MidSeasonUpgrade the Wing Gundam Fenice Rinascita returns the Wing's Bird Mode, but the suit's silhouette closely resembles a cross between the Wing and the [[Anime/MobileSuitGundam00 Reborns Gundam]]. Fitting, since Rinascita translated to English is "Rebirth".
* Gundam X Maoh: A [[Anime/AfterWarGundamX Gundam X]] with the [[KillSat Solar System superweapon]] from the original ''Anime/MobileSuitGundam''
* Build Gundam Mk-II: A customized [[Anime/MobileSuitZetaGundam Gundam Mk-II]] with the expansion pack sporting the Mk-II Titans color scheme and the arm cannons of the Gaplant. The Build Booster Mk-II mimics the G-Defenser from ''Zeta'', from the removable core fighter to the mounting of aforesaid arm cannons, which are actually updated Mk-II beam rifles, in the same way the G-Defenser mounted a long rifle.
* Beargguy-III: A custom [[Anime/ModelSuitGunplaBuildersBeginningG Beargguy]], which was itself a custom [[Anime/MobileSuitGundam Acguy]].
* Sengoku Astray: [[Manga/MobileSuitGundamSEEDAstray Astray Red Frame]] with elements from the ''Toys/SDSengokudenBushinKourinHen'' cast.
* Abigorbine: A [[Anime/AuraBattlerDunbine Dunbine]]-ized version of [[Anime/MobileSuitVictoryGundam Abigor]].
* Kampfer Amazing: Combines the [[Anime/MobileSuitGundam0080WarInThePocket Kampfer]] with elements from the Zaku Amazing.
* Star Build Strike:
** Speed Mode: based on Wings of Light / Voiture Lumiere system from suits like [[Anime/MobileSuitGundamSEEDDestiny Destiny Gundam]], [[Anime/MobileSuitGundam00 0-Gundam]], [[Anime/MobileSuitVictoryGundam V2 Gundam]] and [[Anime/MobileSuitGundamSEEDCE73Stargazer Stargazer]].
** RG System: Based on the Trans-am System from ''Anime/MobileSuitGundam00'' mobile suits, the Gundam Exia being the first
** Build Knuckle: based on [[Anime/MobileFighterGGundam Shining Finger]].
* Qubeley Papillon: A [[Anime/MobileSuitZetaGundam Qubeley]] mixed with Anime/DetonatorOrgun aesthetics.
* GM Sniper K9: [[Anime/MobileSuitGundam0080WarInThePocket GM Sniper II]] with a play on the [[Anime/MobileSuitGundam00 Seravee]] and [[Anime/Gundam00AWakeningOfTheTrailblazer Cherudim]] autonomous backpack... [[spoiler: and the EXAM System from ''Blue Destiny'' just for good measure.]]
* Hell Zeong Marine/Galaxy: A cheaper but more versatile version of Perfect Zeong.
* The V2 Gundam piloted by the Fonse Kagatie look-a-like in episode 14 is [[PaletteSwap repainted]] in [[VideoGame/SDGundamGGeneration Zanspine]] colors.
* Aila's Miss Sazabi is a combination of the Sazabi body and arms, Nobel Gundam legs, and Infinite Justice feet.
* Yuuki's Amazing Exia and its variants:
** Its base form is a customized Exia Repair 2 from [[Anime/MobileSuitGundam00 00's season 2]]'s last battle complete with its GN Sword Kai, with several of its shots taken from the regular Exia's animation.
** Exia Dark Matter, which takes the [[Anime/MobileSuitGundam00 Exia]], mixes in a DualWield aesthetic from the Strike Noir and [[Anime/ModelSuitGunplaBuildersBeginningG Beginning J]], and further blends in elements of "The Strongest Enemy", from the [[Anime/MobileSuitGundam Zeong]], [[Anime/MobileSuitGundamSEED Providence]] and [[Anime/MobileSuitGundam00 Reborns]]. The Amazing/Dark Matter Booster's design itself is reminiscent of [[Anime/MobileSuitGundamAGE Sid]], and its particle trailing mirrors that of the 00-Raiser.
** For the final episode, Yuuki's Amazing Exia Repair, which is essentially a kitbash of the Amazing Exia with Kampfer Amazing parts and the Exia Repair's cloak.
* Master Chinan, Ral and Takeshi also sport slightly customised versions of the Master Gundam, Gouf and Perfect Gundam.
** Also, Ral's Gouf is the Gouf R35. A nod to how Ramba Ral in Mobile Suit Gundam and Build Fighters is 35, as well as the 35th anniversary of Gundam.
*** According to the HG model manual, the Gouf R35's booster pack is based off of the one Ramba Ral used when he led a commando raid on White Base [[spoiler:also the same battle in which he died]].
* In the epilogue, Mao and Chinnan are seen playing around with two heavily kitbashed models, actually real life customs made by Creator/MikakoKomatsu and Sachi Kokuryu (aka Sei and Reiji's voice actresses) to promote Gundam Breaker, a new [=PS3=] game that's basically Build Fighters: The Game (albeit against AI opponents).
* The Star Burning Gundam is a deliberate CallForward to [[Anime/GundamBuildFightersTry Build Burning Gundam]], being based on [[Anime/MobileFighterGGundam Shining Gundam]] (since Build Burning resembles the Burning Gundam), while adding aspects of the [[Anime/MobileSuitZetaGundam Gundam Mk II]] like the backpack design. It's also got the folding rifle and light-up panels from the Star Build Strike, the forearm claw gauntlets from Burning Gundam, and a new shield that seperates into two weapons like the 00 Gundam.
* The Reversible Gundam: In-universe it's a custom Reborns Gundam from 00 Season 2, but the actual customization and functionality of the suit are based on the Reborns Gundam's predecessor - the Reborns Gundam Origin from the sidestory ''00V''. FridgeBrilliance kicks in when you realize this is why it lacks the Reborn Gundam's Twin-Drive system and Trans-Am mode, as the Origin lacked the two.
* The Ballistic Zaku: A customized Char's Zaku II Commander type [[Manga/MobileSuitGundamTheOrigin Origin-version]] with weapons based on all the armament Char Aznable would use throughout his career.
* Weiss Sinanju from ''Build Fighters Battlogue'' episode 2 is a threefold one - the original [[Anime/MobileSuitGundamUnicorn Sinanju]], Sinanju Stein, was created out of the designs and data of the [[Anime/MobileSuitGundamCharsCounterattack Nu Gundam and the Sazabi]] and had a predominantly white color scheme before being captured and repurposed into Full Frontal's red variant. It can also be considered a shout-out to the white Sazabi from ''Gunpla Builders Beginning''.
[[/folder]]

[[folder:Unsorted]]
* In the 1st opening, Build Strike mirrors the Strike Gundam's pose from the 1st and 2nd openings of ''Anime/MobileSuitGundamSEED''.
* Plavsky Particles are a reference to Minovsky Particles, the AppliedPhlebotinum of ''Anime/MobileSuitGundam''.
* In Reiji's "prince story" in episode 3, the three princesses resemble Dianna Soreil and Kihel Heim from ''Anime/TurnAGundam'', as well as Relena Peacecraft from '' [[Anime/MobileSuitGundamWing Gundam Wing]]''.
* One of the regulars of the bar made a guess that Reiji might have been originated from the [[Anime/MobileSuitGundam Flanagan]] [[http://gundam.wikia.com/wiki/Flanagan_Institute Institute.]]
** The battle between Reiji and the Marasai mimics the Jaburo battle from ''Anime/MobileSuitZetaGundam'', complete with the part about the clashing beam rifle shots.
** In the same episode she can be seen watching ''Anime/MobileSuitGundam00''.
* In the episode 4 Kirara fight, Build Strike's leg snaps off after tripping over some wires, just like Hi-Nu in the first battle in ''Anime/ModelSuitGunplaBuildersBeginningG''.
* Whenever Fellini manages to successfully pick up a girl, the beam rifle sound effect plays in the background.
* Reiji's battle with Fellini has a brief moment where the Wing Gundam Fenice looks up and its eye flashes; this one's a two-fer, imitating the original Wing and Wing Zero in each of ''Gundam Wing'''s openings.
** Fenice does it again in Episode 15, during Fellini's HeroicSecondWind.
** [[Anime/MobileSuitGundamAGE Obright's]] rotating hand beam saber stab returns in the same episode, and also the Char Kick.
*** Build Strike Full Package and Zaku Amazing suffer damage that looks similar to the AGE-2 Dark Hound and Red Legilis from Memories of Eden.
* The American tournament takes place in the La Vie en Rose Garden, not only referencing the real-life [[http://en.wikipedia.org/wiki/Moda_Center Rose Garden]] but the La Vie en Rose orbital weapons array from ''Anime/MobileSuitZetaGundam''.
* In the 2nd opening, Build Strike and Qubeley Papillon grapple with each other exactly like Wing Zero and Epyon did in ''[[Anime/MobileSuitGundamWing Gundam Wing]]'''s 2nd opening.
* Mao's signature pose and [[http://img.photobucket.com/albums/v629/Kuruni/Store/Temp/gunplathegunpla.jpg Star Build Strike's victory pose in Episode 24]] are variants of [[Anime/MobileFighterGGundam "Gundam the Gundam"]] pose.
* On the merchandise side, the box art of HG 1/144 Build Fighters mecha mimic the EyedScreen box art of the ongoing HGUC line, meant as a homage to past Gundam mecha of random series, rather than those of other ongoing mainline series like Gundam Age, despite being an ongoing series itself. It's deliberate since the Build Fighters mecha homage past Gundam mecha anyway.

Episode 1:
* The damage Sazaki does to Sei's [[Anime/MobileSuitGundamWing Wing Gundam]] is identical to the damage it takes after Heero self-destructs the unit early on the series.
* A model of the Dijeh, the Mobile suit Amuro used in ''[[Anime/MobileSuitZetaGundam Zeta]]'', is shown painted in the classic Gundam colors.
* The final kill blow on Sazaki's Gyan mimics the camera angles and sequence of an iconic scene where the original Gundam puts its beam saber left-handed through a Zaku-II.

Episode 2:
* When Yuuki participates in a Gunpla Battle, he lifts his hair back to show his forehead, not unlike H/Allelujah Haptism in his final battle of the first season in ''Anime/MobileSuitGundam00''.
* Meijin Kawaguchi's {{Leitmotif}} is a flamenco guitar, like that of [[Franchise/SailorMoon Tuxedo Mask]], who is voiced by Creator/ToruFuruya, who also voiced Amuro Ray. It also includes a whiff of Gallant Char from ''Anime/MobileSuitGundam''.

Episode 7:
* Reiji takes out 12 G-Bits with ease, referring to the famous battle from ''Anime/MobileSuitGundam'', where Amuro takes on 12 Rick Doms at the same time.
* The clock in Sei's room has "Anaheim" on the face, referencing Anaheim Electronics from the UC timeline.

Episode 8:
* The title of Episode 8 "Ai Senshi tachi (Encountering Warriors)" shares the same pronunciation with "Ai Senshi (Soldiers of Sorrow)" the Ending song of [[Anime/MobileSuitGundam Mobile Suit Gundam]].
* The Build Gundam Mark II taking out the Apsalus III is reminiscent of the climax of ''[[Anime/MobileSuitGundamThe08thMSTeam the 08th MS Team]]'' OVA, due to how both Gundams (Build Mk-II and [=Ez8=]) are piloted by two people and the fact the Build Mark II got in close for the final blow.
* Yuki's alias Kawaguchi is a reference to Katsumi Kawaguchi, an experienced gunpla builder who works for Bandai. As of November 21 2013, [[https://www.facebook.com/katsumi.kawaguchi his facebook profile]] has CoolShades like one in the show.
* There are several location shout outs given in Episode 8.
** The Flana Institute, where Aila came from, to the [[Anime/MobileSuitGundam Flanagan]] [[http://gundam.wikia.com/wiki/Flanagan_Institute Institute.]]
** The La Vie en Rose Garden, the venue for the Gunpla World Championship America Qualifiers, to the [[Anime/MobileSuitGundam0083StardustMemory La]] [[Anime/MobileSuitZetaGundam Vie]] [[Anime/MobileSuitGundamZZ en]] [[http://gundam.wikia.com/wiki/La_Vie_en_Rose Rose]]. It can also be referred to New York's [[http://en.wikipedia.org/wiki/Madison_Square_Garden Madison Square Garden]] or Portland's [[http://en.wikipedia.org/wiki/Moda_Center Moda Center]] (formerly known as the Rose Garden).
** One of the fans is wearing the trademark Char Mask (Though it looks like Zeheart's)
* Rivals Logan and Fellini use modified versions of rival suits the Tallgeese and Wing Gundam from ''Anime/MobileSuitGundamWing''. Incidentally they are friendly rivals.
** The Qubeley Papillon and the Alpha Azieru during the Finnish National Finals are a subtle nod to the fact that both of the suits are piloted by girls who are interested in Char Aznable (Haman Khan and Quess Paraya respectively).

Episode 9:
* The two customers at China's family restaurant, the Marasai team from another episode, are wearing T-Shirts with the Titans uniform patterns from ''Anime/MobileSuitZetaGundam''.
* Caroline's Knight Gundam when it got caught in the Beargguy III's cotton resembles Zero the Winged Knight when he got put in the rice bag in ''Anime/SDGundamForce''.
* The Beargguy III's cotton-filled armor and "weapon" may be a reference to ''Manga/MobileSuitCrossboneGundam'''s Tortuga, which contains fast-hardening gas that traps any enemy capable of penetrating its armor.

Episode 10:
* China gives Sei and Reiji good luck charms. Sei's is a classic [[Anime/MobileSuitGundam green Haro]], while Reiji's is an [[Anime/MobileSuitGundam00 orange one]].
** Alia and the meat bun is a reference to Allenby's love of meat buns from ''Anime/MobileFighterGGundam''. Alia is even somewhat similar to Allenby.
** At the end of it's debut battle, it also makes the same noise as the [[Anime/MobileSuitGundam00 GN-Drive]].

Episode 11:
* The kamikaze Gaw attack carrier was a reference to [[Anime/MobileSuitGundam Garma Zabi's last ditch effort to sink the White Base.]]

Episode 12:
* The Mega Size Zaku makes breathing noises, recalling the first scene of ''Anime/MobileSuitGundam'' where the team of Zakus infiltrating Side 7 made similar noises[[note]]It also doubles as a ShoutOut to ''Franchise/StarWars'', since it sounds nearly identical to Darth Vader's breathing noises[[/note]].
* When Nils compares Sei and Reiji's fight against the Mega Size Zaku to "tilting at windmills", the windmill shown looming over Don Quixote is actually the Nether Gundam from ''Anime/MobileFighterGGundam''.

Episode 13:
* The recolored Zeus Gundam tries to finish off Gundam X Maoh in the exact same manner the original Zeus Gundam tries to finish off God Gundam in ''Anime/MobileFighterGGundam''.

Episode 14:
* In the 3 on 3 battle, the V2 Gundam defends itself from Maoh's Satellite Cannon with the same move it used near the end of the original ''Anime/MobileSuitVictoryGundam''.
* The race battle is a reference to "SD Gundam Crazy Race" episode in old ''SD Gundam Mark IV'' OVA[[note]]which is a homage to WesternAnimation/WackyRaces[[/note]].
* Heero Yuy cameoing [[GenderFlip as a young girl]] may be a reference to the fact that in the original show, he was [[ComicBookFantasyCasting physically modeled after]] a female IdolSinger.

Episode 15:
* FreezeFrameBonus: India's fighter is [[Anime/MobileSuitZetaGundam Raman]] [[Anime/MobileSuitGundamZZ Khan]], against [[Anime/MobileSuitGundam00 Alejandro Cola]].
* The battle between [=Sei/Reiji=] and Fellini ends up referencing ''Char's Counterattack'' and ''Anime/MobileSuitGundamWing'' more than once; firstly, Sei sets up the Universal Booster with a wire to serve as a "trap", just like Amuro did with the Nu Gundam's bazooka.
** Secondly, the fight sees the Strike and Wing gradually whittle each others' weapons down until they're left bare-knuckle boxing with each other, as happened with the Nu and Sazabi.
** Fellini using his rifle to blast the terrain may be a nod to Heero's Antarctic duel with Zechs, where he likewise shot up the terrain to gain an advantage.

Episode 16:
* Takeshi's house when Sei paid a visit during his dream is [[Anime/MobileSuitGundam Tem Ray's house in Side 6 colony.]]
** On Takeshi's desk is the "Tem Ray Circuit"[[note]]The junk part Tem gave to Amuro when they met again on Side 6[[/note]] made infamous by ''VideoGame/SuperRobotWars''.
** When the two of them fly into the sky, we get the classic picture of the RX-78's face half-silhouetted, as seen on the first movie's poster.
* Rinko is humming the starting part of "[[Anime/MobileSuitGundamSEED Invoke]]" when packing for her trip.
* Chairman Mashita rolls around in [[Anime/MobileSuitGundamWing Dorothy Catalonia's]] gold stretch limo.
* Aila holds her ice cream up in the air in a pose from ''Anime/MobileSuitGundam'''s opening.
* One of the shops in the mall is a curry shop called Maharajah, named for [[Anime/MobileSuitZetaGundam Haman Karn]]'s father.
* Takeshi tell Reiji to charge toward Zeong, as it was how Amuro defeat Zeong. Subverted in that Zeong Galaxy have two extra claws to grasp the Beginning Gundam.

Episode 17:
* The top 16 contestants shares similar names to some characters in past Gundam series.
** As mentioned above, India's fighter is [[Anime/MobileSuitZetaGundam Raman]] [[Anime/MobileSuitGundamZZ Khan]]
** Great Britain's fighter is [[Anime/MobileSuitGundam0080WarInThePocket John Ayers McKenzie.]]
** Ireland's fighter is [[Anime/MobileSuitGundam00 Patrick Mannequin]]. Whether he is the same Patrick from the series is up to everyone's guess.
** Canada's fighter is Justin Fox. Might be related to Reed Fox, pilot of the [[VideoGame/GSaviour G-Saviour]]. He got defeated by Meijin offscreen in Episode 18.
* Mao's S Gundam was a featured Gunpla in L'Arche de Noe... in other words, [[Anime/MobileSuitGundam Noa's Ark]].

Episode 18:
* Sei and China eat at a restaurant named [[Anime/MobileSuitGundamSEED Archangel]].
* The Renato brothers' GM Sniper K9 and Meijin's Kampfer Amazing battle are based off the GM Sniper II and Kampfer, who battled each other in ''Anime/MobileSuitGundam0080WarInThePocket''.
* [[spoiler:Kawaguchi's Kampfer defeats the Renato brothers with a Gatling gun -- the exact opposite of what happened to the original Kampfer in ''Anime/MobileSuitGundam0080WarInThePocket''.]]
** Not only that, but [[spoiler: this happens after they try and fail to destroy the Kampfer by attaching explosives to it - again, nearly the exact opposite of what happened in ''War in the Pocket''.]] The main difference is the [[spoiler: EXAM System activation]] in between.
* The Renato brothers' secret plan, Operation Time Stop, is a reference to the [[Anime/MobileSuitGundam original series]] episode "Time, Be Still"; both involve [[spoiler:Zeon soldiers planting bombs on their enemy's mobile suit.]]

Episode 19:

Episode 20:
* The title of Episode 20 "Uragiri no Aira (Aira's Betrayal)" is a play on the ''Anime/TurnAGundam'' episode "Uragiri no Guen (Guin's Betrayal)".
* The Amazing Exia reveal at the end of the episode mimics the 00 Quanta reveal at the beginning of ''Anime/Gundam00AWakeningOfTheTrailblazer''.
* Sei's reciting of lines actually is a perfect recreation of a scene from episode 14 of the original ''Mobile Suit Gundam''.
* Wing Gundam Fenice's self-destruct features references Wing Gundam's self-destruction early in ''Gundam Wing''.
** The scene in which [[spoiler: Kirara talks him out of it resembles when Trowa attempted to self destruct and was talked out of it by Catherine.]]
* Aila ripping off Wing Gundam Fenice's right arm after the Embody system activates references Noble Gundam ripping off Bolt Gundam's right arm during it's first appearance in ''G Gundam''.

Episode 21:
* After Nine triggers the Embody System and Aila evades Reiji's draw-cut, the Qubeley Papillon goes airborne above the Star Build Strike. Reiji's response is to pull an [[InternalHomage Internal]] HomageShot to the [[http://i.imgur.com/xCZs8xw.jpg Last Shooting]] at the end of ''Anime/MobileSuitGundam.''
* The conversation between Reiji and Aila during their fight mirrors the various psychic heart to hearts throughout the franchise, particularly Gundam 00.
* The last part of Reiji's [[spoiler: full name: Aria Von Reiji Asuna is also the first name of the female protagonist of Manga/MobileSuitGundamEcoleDuCiel, Asuna Elmarit.]]

Episode 22:
* The Amazing Exia is 80% complete, the completion state of the Zeong during the battle of A Baoa Qu.
* Meijin Kawaguchi also finishes his semifinal bout in a tribute to the Exia defeating the Alvaaron in the penultimate episode of Gundam 00 Season 1.

Episode 23:
* Many of the festival stalls sport logos and insignias of famous Gundam organizations, military units, and corporations.

Episode 25:
* Fellini standing in the shadows at the back, watching Kirara onstage, is a nod to the OVA ending version of ''Anime/MobileSuitGundamWingEndlessWaltz'', where Heero did something similar.
* In a blink-and-you'll-miss-it moment, when using the [[spoiler: Hyper Build Knuckle]], the Build Strike's damaged eye manifests a glowing red light, exactly like the [[Anime/MobileSuitGundamUnicorn Sinanju]].
* Arian, Reiji's home kingdom is shown to be possibly located inside a colony.
* During the credits, blink too quickly and you'll miss Sazaki's Gyan annihilating a [[Anime/MobileSuitGundamWing Leo]], referencing their pitiful weakness in their source material.
* In the very end, [[spoiler:Build Strike Cosmos]] recreates the 00 Raiser's distinct particle trail.
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