[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/majinbone.jpg]]

''Majin Bone'' is a digital card game about armored warriors by Creator/{{Bandai}}. A manga series is serialized in the magazine Saikyo Jump by Shueisha and an anime television series by Creator/ToeiAnimation debuted on April 1, 2014 on Creator/TVTokyo.

The anime focuses on Shōgo Ryūjin, a young man who gets caught up in the fighting over Dragon Bone, a guardian entity of the earth that bonds with him. He soon finds that there are others like him, who can fuse with the Bones to fight the invading monsters. However, Shōgo is different: It is his Bone in particular that the enemy is after, so he's recruited by their group in order to fight.

----
!!''Majin Bone'' provides examples of:

%% * AnimalMotifs: Every single armor used by the Bone Fighters has one, some examples include:
%% ** [[BigCreepyCrawlies Mantis Bone, others below]].
%% ** [[GiantSpiders Spider Bone]]
%% ** [[JapaneseBeetleBrothers Beetle Bone]]
%% ** [[ScaryScorpions Scorpion Bone]]
%% ** [[CoolHorse Horse Bone]]
%% ** [[NobleWolf Gregory with Wolf Bone]]
%% ** [[PantheraAwesome Antonio with Jaguar Bone, Victor with Tiger Bone, Liebert with Dark Panther Bone]]
%% ** [[KingOfBeasts Gilbert with Leo Bone]]]
%% ** [[RhinoRampage Tyrone with Rhino Bone]]
%% ** [[ThreateningShark Luke with Shark Bone]]
%% * AffablyEvil: Some of the Nepos are this. Most notable being Liebert (Dark Panther) and her two bodyguards (Dark Bear and Dark Grizzly).
* AliensSpeakingEnglish: Subverted. It only [[TranslationConvention sounds like they're speaking Japanese]] because we're seeing things the way the Bone Fighters do, and they likely share some sort of connection that allows them to understand each other. Later on, Shōgo has to translate for a non-Fighter.
* ChaseScene: Half of episode twelve is Shōgo running from Liebert who keeps going after him no matter what tries to stop her.
%% * ChildhoodFriends: Shōgo and Saho.
* {{Cloudcuckoolander}}: Shōgo's friend Saho is obsessed with aliens and believes that they are the ones behind the strange occurrences lately. [[TheCuckoolanderWasRight And they are!]]
%% * CharacterDevelopment: Several of the Nepos who survive their loss against Shōgo and his TrueCompanions start undergoing this.
* ColorCodedElements: Each Bone has different element associations:
** [[BlowYouAway Air]] is colored light blue.
** [[DishingOutDirt Earth]] is colored brown.
** [[GreenThumb Plant magic]] is colored green.
** [[MakingASplash Water]] is colored blue.
** [[PlayingWithFire Fire]] is colored red.
** [[ShockAndAwe Electricity]] is colored yellow.
* CosmicKeystone: Each planet's "Guardian" Bone. If it is ever removed, that planet is instantly ''destroyed'' as seen in episode 25.
* CruelAndUnusualDeath: [[spoiler:Dark Horse is slowly crushed by the Revelation Cocoon being compressed by the Primordial Majin, his screams make the scene even worse]].
%% * DumbMuscle: Gustos and Morse are this, like how in episode 24 they were supposed to kidnap Saho but instead ended up having a picnic with her.
* EvolvingCredits: The opening adds Leo to the Bone Fighter line-up in episode 6.
* ExtremityExtremist: Gilbert is a {{Box|ingBattler}}er and Dark Horse the leader of the QuirkyMinibossSquad, uses his feet exclusively.
* GodIsEvil: The Neposians claim that the creator of everything in this universe is the Primordial Majin, and the reason they're trying to destroy earth is because that's what it has asked of them.
* GoKartingWithBowser: In Episode 24, Saho (unknowingly) has a picnic with Gustos and Morse (Dark Bear and Dark Grizzly). Also in the same episode, Shōgo has a karate match with Liebert. Of course, the latter is treated more seriously than the former, as Gustos and Morse are more or less PunchClockVillains and easily the most AffablyEvil of the Nepos to boot.
* HiddenDepths: The Nepos are initially introduced as evil invaders who seem to want to destroy Earth ForTheEvulz. However, over time, its revealed that there is much more to them than that, as well as how some of them reveal certain characteristics that either make them more sympatethic, if not flat out NobleDemon. Example: Klude is initially shown to be a cold and distant individual, but he's later to shown to be a ReasonableAuthorityFigure to his subordinates, as well as a NobleDemon who while knowing that Earth will be destroyed if they succeed, wants to at least give the Earthlings a quick and painless death, and takes no pleasure in what he is doing.
%% * HumanAliens: Nepos Angelis, the enemy Bone users. Justified in that they all share the same creator, the Primordial Majin.
* TheLoad: Surprisingly a good thing. Frequently when any of the TrueCompanions gets a [[NewPowersAsThePlotDemands power upgrade]], the others start to feel useless, and then strive to catch up, often gaining the same upgrade in the next 1 or 2 episodes.
* LimitedWardrobe: Most of the characters only have three unique outfits aside from their armors, and that's including swimsuits worn for the BeachEpisode. Shōgo is the only one who has more, because of his Karate and school uniforms.
* {{Masquerade}}: The public is kept unaware of the existence of aliens and how they want to destroy Earth.
* MassiveNumberedSiblings: Tyrone has 15 younger siblings: 7 little brothers and 8 little sisters.
* MissingMom: Shōgo's mom passed away when he was very young, as had Leibert's. It later turns out Shōgo's mom [[spoiler:is alive, but currently on the International Space Station]].
* MultiNationalTeam: The protagonist team are from different places around the world.
** Shōgo from Japan, Asia.
** Antonio from Brazil, South America.
** Tyrone from Kenya, Africa.
** Luke from Australia.
** Gilbert from The United States of America.
* NobleDemon: The Nepos that have been assaulting Earth [[spoiler: up till episode 25]]. While they do intend to capture Dragon Bone at the cost of destroying Earth (as Earth cannot exist without Dragon Bone) in the process, the actual destruction itself is said to be a quick and painless process for the planet and its people. [[spoiler: Unfortunately, not all of the Nepos are this, and one of them intends to take over the invasion...and he ENJOYS killing innocents as a hobby]]
%% * OrdinaryHighSchoolStudent: Shōgo Ryūjin says this about himself.
%% * PhenotypeStereotype: Gilbert.
%% * PromotedToParent: It's unknown what's going on with his parents, but it seems like this may have happened to Tyrone.
%% * PunchClockVillain: Over time, it's revealed that many of the Nepos are this, as they are only following orders.
%% * TheQuisling: Gregory and Victor work with Nepos Angelis.
* SeventhEpisodeTwist: [[spoiler: It seems that [[TheCuckoolanderWasRight the resident alien theorist Saho was right]]; Extraterrestrials are the antagonist Bone Fighters.]]
* SheIsNotMyGirlfriend: Shōgo denies to Antonio and Tyrone that Saho is his girlfriend. [[EveryoneCanSeeIt Antonio and Tyrone don't buy it.]]
* SugarAndIcePersonality: Luke. He may appear like a cold individual, and can be blunt at times, but he's easily one of the nicest and most understanding characters. He also feels a great obligation to look out for his teammates' well being [[spoiler: to the point he was more than willing to go berserk (an act that can cause serious damage to the Bone Fighter who does it) in order to stop being (in his opinion) TheLoad to Shōgo]]
* TitleDrop: Episode 37 where Dr Leonard talks about the Rare Metal Bones which he nicknames Majin Bone, cue the logo appearing.
* TrademarkFavoriteFood: Luke loves sweet things, especially Parfaits, and Gilbert seems to enjoy chocolate.
* TransformationSequence: The Bone Fighters transform using their cards. They armor up first with their arms, then lower half of their body and finally their torso and head.
%% * TrueCompanions: What ultimately brings the main team together and allows them to grow stronger. Something the Nepos Angelis notably lack [[spoiler: with a few exceptions]]
%% * {{Wingdinglish}}: The font of the Bone cards.

----