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[[quoteright:315:http://static.tvtropes.org/pmwiki/pub/images/mario3.jpg]]
[[caption-width-right:315:Show time!]]
The third game in the ''[[VideoGame/MarioAndLuigi Mario & Luigi]]'' {{RPG}} series, released in 2009 for the NintendoDS. Its [[MarketBasedTitle Japanese name]] is ''[[ExcitedShowTitle Mario and Luigi RPG 3!!!.]]''

A mysterious disease, the Blorbs, are causing Toads to swell into giant balloons. In a bid to capture Princess Peach and use her to claim the dark power of the Dark Star, an ArtifactOfDoom that is [[SealedEvilInACan buried beneath the Mushroom Kingdom]], Fawful tricks Bowser into eating a mushroom that lets him suck up her, the Mario Bros., and most of the Toads in Peach's Castle.

With Peach, Mario and Luigi trapped inside Bowser's body, Fawful takes over Bowser Castle, capturing some of his minions and brainwashing the rest. Bowser embarks on a journey to take back his palace and free all his minions. Meanwhile, Mario and Luigi [[FantasticVoyagePlot aid him from inside his body when necessary]] in the midst of collecting the three Star Cures needed to counteract the Dark Star.

One of the quirks of the game is that Bowser can't be controlled unless Mario and Luigi are inside his body. That's because of the new mechanic of the Vacuum Block, which allows Bowser to suck up smaller enemies or, less frequently, parts of the enemies that temporarily raise Bowser's stats. When Bowser is ingesting entire enemies, the screen cuts away to a battle inside Bowser between the Bros. and the enemy. After this battle is over, the outer battle resumes (unless Bowser ate the last enemy). Notably, this is the only way that Mario, Luigi, and Bowser can fight against common enemies in the same battle. Another feature is that while most of the world is the same format as the previous two games, a top-down view of the world, all the stages inside Bowser's body are 2-D, side-scrolling levels.

----
!!Tropes appearing in this game:

* AbsurdlyHighLevelCap: Level 99, in a game that is usually beaten around level 40, if not lower.
* ActionBomb:
** Bob-ombs, the walking bombs that are a staple of the Mario franchise. Bowser can get a special attack where he can line up the Bob-ombs to attack certain enemies.
** The Alarm Bob-ombs are Bob-ombs that explode when their time's up.
* AccidentalMisnaming: Broque Monsieur keeps referring to Bowser as "Monsieur Turtle Bits".
* ADayInTheLimelight:
** Luigi gets his moment to shine during a few plot points.
** The game is as much a Bowser game as a Super Mario game.
* AirborneMook: Some enemies can fly or float, and are thus immune to hammers, shells, shockwaves or any other low-hitting attacks. Bowser himself is unable to hit them via normal attacks as they either fly too high or can easily dodge his slow attacks. But he can still suck them up...
* AlienGeometries: There are pipes inside of Bowser that got there when he sucked them up. They lead to the outside of Bowser's body, without, at any point, going ''through'' Bowser. And in doing so, also raise the Bros.' size from microscopic to macroscopic. This sort of thing is par for the course in Mario World, though. Why do you think they're called ''warp'' pipes?
* AlwaysAccurateAttack:
** Unusually for a game that bases its battle system on dodging attacks, [[spoiler:Peach's Castle]] has one; it's even called "Unavoidable attack". Bowser will take damage from this and cannot counter it.
** The Stone Blooper (whom you fight inside Bowser) has an attack where it embeds itself into the ground and drills into it, causing Bowser damage. It's one of the very few attacks by a normal enemy you cannot prevent.
* AmazingTechnicolorBattlefield: Bowser even compliments the final boss on creating the "perfect backdrop for an awesome final battle." Said quote is actually the page quote for that page.
* AngryGuardDog: Broggy, Broque Monsieur's guard dog. He's pretty much pissed off at everything and can be unlocked as Bowser's final Special Attack. It also seems to have adopted his master's hatred of Mario since he'll growl if he comes too close.
* ApatheticCitizens: Averted in the case of the Dimble Wood Wigglers. After Bowser ransacked the farm and the forest became a battlefield for Giant Bowser and his castle, they increased their security measures.
* ArsonMurderAndJaywalking: Wiggler accuses Bowser of invading and contaminating his farm, pulling out his giga-carrot, and eating it. Even though he made you do the last part.
* AscendedExtra: Fawful goes from being TheDragon in ''VideoGame/MarioAndLuigiSuperstarSaga'', a [[DemotedToExtra shopkeep]] in ''VideoGame/MarioAndLuigiPartnersInTime'', to the BigBad in this game.
* AscendedMeme: The game uses both "AWinnerIsYou!" and "[[VideoGame/TheLegendOfZelda They're a secret to everybody]]". The former is actually appropriate, as Fawful, the person who says it, is a StrangeSyntaxSpeaker.
* AttackOfThe50FootWhatever: Parts of the game have Bowser growing giant in order to combat opponents too large for regular size.
* BadAss: [[TookALevelInBadass Bowser shows just how badass he can be when not fighting Mario.]]
* BagOfSharing: Both the Bros and Bowser share coins and items. Makes one wonder where the coins gets stored. Also, when either characters are selling things in shops, the fact that Mario can sell a huge turtle shell and spicy drumsticks and that Bowser can sell mushrooms and overalls is a bit odd.
* BagOfSpilling: Averted in one case where the brothers decide to use a move ("Hit Mario with a hammer to make him small") from the first game when it is required, but otherwise played straight.
* BalloonBelly: Lots. It's part of Fawful's plan to extract Princess Peach from Bowser's body after tricking him into trapping her in there -- later in the game, Bowser can go back and get fat again whenever he wants (allowing Mario and Luigi to gain access to Flab Zone again, but there is no need to). The Bros. use it to their advantage as part of their "Snack Basket" special, using a giant Luigi to make a quake that damages all enemies, as well as to inflate Mario with air or water for travel purposes. And of course a bunch of Toads coming down with [[TheVirus the Blorbs.]] When it gets cured, one Toad seems to stay sick, until he says that it's how he normally looks like.
* BeamOWar: A brief fire breathing contest between Bowser and [[spoiler: Dark Bowser]].
* BigBad: [[DragonAscendant Fawful]].
* [[spoiler: BiggerBad: The Dark Star.]]
* BigEater:
** Luigi, for one of the Mario Bros. special moves.
** Bowser. He gets fed [[BalloonBelly a tad too much]], though.
* BlahBlahBlah: Bowser absolutely ''hates'' being made to listen to long-winded speeches, at one point even shouting, "TOO MANY WORDS."
* BonusBoss: There are [[spoiler:three Shroobs]] locked up in Bowser's Castle that give you a Bros move for winning. There's also the Challenge Node in Bowser's body (somewhere around his...liver?), although the fights there are only upgraded versions of old bosses. And are short, so short that there is a limit to how many moves you can finish them off in. This culminates in a BossRush incidentally featuring its own BonusBoss: [[spoiler:[[ThatOneBoss Bowser X]]]].
* BoisterousBruiser: Bowser
* BossBonanza: [[spoiler:The repurposed Peach's Castle holds Junker, Blizzard Midbus, Dark Star, Super Peach's Castle, Dark Fawful, and Dark Bowser and the Dark Star Core. Starting with the Dark Star, the only plot events are these boss fights and the buildup for them, and if you just go right for these bosses and do nothing else, there won't even be any regular enemies.]]
* BossRemix: Bowser's Theme is remixed for the Giant Boss Battles.
* BossRush: Class 7 in the Gauntlet. Plotwise, the last four bosses: [[spoiler: the Dark Star, Super Peach's Castle, Dark Fawful and the Vaccuum Helmet, and Dark Bowser and the Dark Star Core. Although you can do whatever you want in between, plotwise, only things related to the fights happen in between, like the final Rump Command minigame to activate the Super Peach's Castle fight and a minigame fight with Dark Bowser.]]
* BrainsEvilBrawnGood: Played straight with the [[DumbMuscle idiotic but strong]] Bowser as the VillainProtagonist versus the intelligent Fawful.
* BreadAndCircuses: Fawful. Not only does he win over the respect of nearly all of Bowser's henchmen, but he turns Bowser's Castle into a ''theater''. And even Bowser has to admit that his cooking is excellent.
* BreathWeapon: Bowser, whose arsenal includes his trademark fire breath.
* ButtMonkey:
** Poor Luigi. He gets the most humiliating of the attacks, but at least he seems to enjoy them.
** The game's premise centers around Bowser having accidentally swallowed a small town; there are quite a few indignities that go with that.
* CatchPhrase: "I HAVE CHORTLES!", by Fawful, the BigBad. Used in place of evil laughter, or accompanying it.
* ChekhovsGunman: Durmite, which at first appears to be little more than a [[GiantSpaceFleaFromNowhere Giant Space Caterpillar From A Carrot]]. Its later revealed to be one of the Star Sages.
* ChestMonster: Trashure (and Dark Trashure, later in Peach's Castle), a fairly regular enemy that doesn't bother trying to trick you. The chest opens at low health, giving Bowser the chance to inhale the coins inside. The regular attack also sometimes spits out coins (or mushrooms). It's also a bit of a MetalSlime however, tending to flee the battle.
* ClimaxBoss: Alpha/Beta Kretin, filling the same role as Petey Piranha in the previous game, but with a much larger plot revelation afterwards.
* CognizantLimbs: [[spoiler:Dark Fawful]]'s three legs have to be destroyed (and you have to get rid of his two eyes as well so he won't hide those legs before you attack) before the Brothers can hit his true target, the [[spoiler:Dark Star Core]].
* CollectionSidequest: Finding the Blitties, which lets Bowser use Broggy in a Special Attack. Beans also return but boost stats straight away. There's also collecting the various Attack Pieces that aren't necessarily needed to finish the game and are [[AwesomeButImpractical SP expensive]], but a couple of them can become {{Game Breaker}}s.
* ContinuityNod: The aforementioned BonusBoss battle against [[spoiler:[[HumanPopsicle cryogenically-frozen]] [[VideoGame/MarioAndLuigiPartnersInTime Shroobs]] in Bowser's castle. In fact, the ''[[VideoGame/MarioAndLuigiPartnersInTime Mario & Luigi: Partners in Time]]'' recaps accompanying the fight border on ContinuityPorn; when Mario informs a disbelieving Starlow that it was Luigi who finished off the Shroobs in the end, she mocks him by suggesting that he did so by "ferociously crying" - [[WeaksauceWeakness and she's dead-on right]].]]
** Isn't this whole game basically a Continuity Nod? Think about it: In game 1 Fawful is [[TheDragon the dragon]] to [[BigBad the Big Bad Cackletta/Bowletta]]. In game 2 he sells badges to Baby Mario and Baby Luigi claiming that one day he will have his revenge. What does he do in this game? That's right. He gets his revenge and becomes [[BigBad the Big Bad]].
--> "But... Now that I am thinking... [[spoiler: Cackletta's [sic] revival]] was all thanks to my quite nasty efforts! Which means, all this time... I am Fawful, who is just a toady! Such working, all for others!" - from ''Superstar Saga''
** Though probably not intentional, the last battle of the first game [[spoiler:is you fighting an evil spirit inside Bowser,]] the final battle of this game [[spoiler:is you fighting an evil spirit inside Bowser.]]
* [[CoolHouse Cool Castle]]: Bowser's Castle and Peach's Castle. They're both ridiculously massive in size and amount of rooms (four or five floors each minimum), but they actually become giant robots. The former can fly to dodge missiles and fight against Bowser himself, the latter becomes a massive robot which attacks via laser beams and black holes. Note that neither of them normally do this, but Fawful tinkered with them.
* CoolTrain: The battle between giant Bowser and a train nicking stuff from his vault.
* CranialProcessingUnit: The Mechawfuls definitely have whatever controls them inside their heads, to the point that the head specifically has to be destroyed separately to stop it from regenerating the body.
* CreativeClosingCredits: After the boss battle, [[spoiler: Bowser is furious to find out that Mario, Luigi and Starlow's been in his body the whole time, and picks up a fight. Cue the closing credits, where he gets KO'd as usual, and a WhereAreTheyNowEpilogue showing what happens next. Oh, and after that, a [[HeartwarmingMoments heartwarming]] scene where Bowser gets a cake from Peach]].
* CulturalTranslation: In most versions of the game, Broque Monsieur is stereotypically French (Even in the French Canadian one, where he's France French, with the associated language differences and stereotypes.). In the France French translation, he's a stereotypical English gentleman. He speaks GratuitousEnglish in the Japanese version too. For example, one of his lines is "Oh my dog! What's happen!".
* CuteKitten: Blitties. Collect them all and you'll get Broggy as a minion. Do Broggy's attack perfectly, and all 15 of them will join him in tackling the enemy.
* DeadpanSnarker: Bowser and Starlow have moments of this, mainly toward each other.
* DecoyProtagonist: While Mario and Luigi are the ones to gather the Plot Coupons, the game is arguably more Bowser's story. Well, the name "Bowser's Inside Story" isn't JustForPun...
* DeathFromAbove: Goomba Storm. [[BattleCry Goo-Ra!]] Note that they're also ''[[IncendiaryExponent set on fire]]'' for this attack.
* DeathOfAThousandCuts: The [[GameBreaker Magic Window]] uses a ludicrous amount of your SP and the individual attacks only do a quarter of the damage your normal jumps can do... but it ''will not stop'' until either you screw up an Action Command or everything on the other end of the field is dead.
* DemonicPossession: Notably ''averted'' in this game. The final boss does not possess any of the characters, and certainly not Bowser. He does, however, fight in a form similar to that of Bowser, and part of the final boss does have Fawful's Dark Star form being fought inside Bowser by Mario and Luigi.
* DepthPerplexion: A minor case, but Broque Madame's Bob-omb challenge and one of Fawful's energy ball attacks require you to be able to judge the "depth" of 2D sprites, making them somewhat difficult to do right. Watch as your Bob-ombs slide past Broque Madame even though you thought they were lined up. And of course, you only have a limited number of times you can do this before losing just before you get a [[RageQuit new rank.]]
* {{Determinator}}: Shown through one of [[spoiler:Dark Bowser's attacks in which Bowser has to face an onslaught of dark versions of his minions. It's pretty danged awesome to watch Bowser simply swat every single dark minion aside as he tromps toward Dark Bowser.]]
* {{Deuteragonist}}: In ''two layers'', no less. One layer is Bowser as one protagonist and Mario & Luigi as the other protagonist (since they are always together cooperatively). And, of course, Mario and Luigi are of equal mutual importance as a protagonist team.
%%* DidYouJustPunchOutCthulhu: [[spoiler:Literally, in Bowser's case.]]
* DiscOneNuke: The Koopa Corps for Bowser, which also remains useful for the rest of the game. Works on both multiple and single targets efficiently, and when done correctly its damage output exceeds several of the more expensive late-game attacks, such as the Magikoopa Mob.
* DragonAscendant: Fawful, although he does not explicitly reference the events in the first game.
* TheDragon: Midbus, to Fawful.
* DualBoss: Bowser Memories M and L.
* DuelingPlayerCharacters: Midway through the game, the Mario bros fight Bowser after finally getting out from his insides. Bowser has the attacks he learned while in the player command.
* DumbMuscle:
** Bowser has just the right mix of this and [[IdiotHero Idiot]] VillainProtagonist.
** Midbus is this even more so, stating that "sense is for the weak."
* DummiedOut:
** There was a Mushroom item [[http://www.youtube.com/watch?v=MFjDTUcO0lQ that allowed the Bros to heal Bowser during a battle inside him]] (for the Sea Pipe Statue, which could damage Bowser from the inside). It was taken out, presumably because only that ''one'' boss had that sort of attack.
** The Underground Tunnel was originally planned to be explored by Mario and Luigi too, but was taken out. [[http://www.youtube.com/watch?v=wW_nZF9tGAg The Choomba enemy has sprites and attacks that it would use if it faced off against the Bros. instead of Bowser]], along with the Naplock and Dark Mechawful enemies. The Dark Mechawful's attack was unfinished, however.
* EasilyForgiven: [[spoiler:Bowser decides to release Private Goomp, Sergeant Guy and Corporal Paraplonk for betraying him for Fawful as long as they help fix the castle. They ''were'' {{Brainwashed}} though, so he can't exactly hold a grudge. Bowser ''does'' care for his minions, after a fashion.]]
* EldritchAbomination: [[spoiler: The Dark Star. Nobody knows [[DiabolusExNihilo what it is or where it's from]], only that it's ''[[OmnicidalManiac evil]]''. Mario and Luigi start gasping and choking ''just from getting near it''. Then Bowser steps up to the plate...]]
* EmergencyTransformation:
** [[spoiler: Fawful turns into a bug-like blob of dark energy after being pummeled by Bowser.]]
** Bowser can only transform into Giant Bowser when his body is in extreme danger-- namely, when he's being crushed.
* EnemyMine: Subverted by Bowser. He is not even aware of the fact that he inhaled the brothers and that they are helping him from inside. And he does not take it kindly when he finally finds out.
* EverythingsSquishierWithCephalopods: Bubble Bloopers and their dried-out forms, Dried Bloopers. Chakron the sage is an octopus.
* EvilerThanThou:
** One of Bowser's main motivations to fight Fawful; only HE is allowed to kidnap Peach!
** [[spoiler: And against Dark Bowser. Only Bowser is allowed to take over the Mushroom Kingdom!]]
* [[EvilTwin Eviler Twin]]: [[spoiler: Dark Bowser to Bowser]].
* EvilIsHammy: Fawful and Bowser.
* EvilIsNotAToy: [[spoiler:Subverted. The Dark Star overpowers Fawful to regain the energy he had absorbed from it, consuming Fawful along with it. However, the two seem to form a mutually beneficial relationship, with Fawful powering up Dark Bowser from within during its fight with the real Bowser, and the Dark Star's core lending its energy and assistance to Fawful in his own battle against Mario and Luigi.]]
* EvilVersusEvil: Bowser vs. Fawful.
* ExpositionFairy: Starlow, a.k.a. 'Chippy', who tries to assist/annoy Bowser. He is not amused when he finds out 'Chippy's' identity.
* FaceHeelTurn: [[spoiler: Private Goomp, Sergeant Guy and Corporal Paraplonk were bribed over to Fawful's side and they lock Bowser in his own safe. Bowser [[EasilyForgiven forgives them]], though.]]
* FakeUltimateMook: When Mario and Luigi '''finally''' get to the first areas Bowser visited, the "large" enemies are jokes, but the small enemies that Bowser instantly defeated without battle ''are'' level appropriate.
* FantasticVoyagePlot: Kind of the point of half the game. Even after gaining a way to get outside of Bowser, Mario and Luigi aren't free from this trope; Mario and Luigi enter into a giant Sockop (Shoe-like pitcher plants) at one point in Dimble Woods, called [[VideoGame/SuperMarioBros3 Kuribo]] appropriately enough.
* AFatherToHisMen: Bowser's troops see him like this. Even though he treats them like crap, he does [[JerkWithAHeartOfGold care for them underneath all his yelling and berating]]. If you try to leave the screen with the Goombas still in the cage, [[ButThouMust Bowser will stop and insist he should help those "idiot Goombas"]].
* FinalExamBoss: [[spoiler:Bowser X counters every Bros. Attack used by inhaling it, making you unable to access that technique until six turns afterwards. This practically requires you to master each of the ten Bros. Attacks in order to defeat him.]]
* FightingClown: Crawful, an enemy that deliberately slips on {{Banana Peel}}s and trips on rocks to damage the player.
* TheFightingNarcissist: Bowser. And he is gorgeous, in his own eyes anyway. Numerous hilarious moments of worship of his own physique, manliness and abilities.
* FinishingMove: Invoked by Bowser at the very end of the game.
--> '''Bowser''': And for the finale, one KO Punch!
* FixedEncounters: Best of all, you can get a free strike on enemies by jumping on them (as Mario and Luigi) or punching/burning them (as Bowser) in the overworld.
* [[ForTheEvulz For The Chortulz]]: While Fawful ''does'' have a plan, very few of his projects involve it at all. The only apparent motive for 80% of his actions appear to be for sheer fun.
* {{Flanderization}}: A subtle example. Fawful's speech patterns are somewhat MORE broken than in Superstar Saga, where he would simply talk in first release VideoGame/FinalFantasyI level sentences with some Zero Wing thrown in near the end. Here, he's more prone to Zero Wing level sentences, with the new [[DepartmentOfRedundancyDepartment Redundancy Department]] deskboy being Midbus (whom Fawful likely taught how to talk like himself.)
* GambitRoulette: Fawful, predictably, slips into this territory. For instance, getting toads infected with the Blorbs seems to have no other purpose than to draw Bowser out of his castle in concern for "his" kingdom and get beaten up by Mario, smacked into the forest where he'd accept the mushroom from Fawful in desperation for a means to beat Mario. [[KansasCityShuffle The Blorbs have the added effect of keeping everyone busy with the epidemic and off his tail]], effectively making his work invisible until it was too late.
* GameplayAndStorySegregation:
** At one point in the game, the bros have a boss fight against Bowser. In the fight, Bowser will more than likely have ''no'' stats in common with the ones he had while being controlled by the player, having far more HP than he would have by that point as well as lower power and defense. In addition, none of the gear he may have had on will be in effect, and he'll never use items or do more than an "Ok" with his special attacks.
** Also, Bowser learns the Spiked Ball overworld ability after Mario and Luigi fix his back and he states "Look at what I can do now!"...[[ForgotICouldFly When he actually has the ability to curl into a ball as soon as you rescue the Shy Guy Squad.]]
* GettingCrapPastTheRadar:
** A couple of moments in the game are funnier once you think about them for a while (or have an incredibly perverse mind). "Mario, are you wearing any gear? I sure hope you are!"
--> '''Bowser''': "My boys will launch an attack on your stiff back."
** "Rump Command" just seems like an odd name until you realize [[{{Pun}} it's the place you go to save Bowser's ass.]]
** Building on that, Fawful literally yanks [[spoiler:Peach]] out of Bowser's ass (thankfully via magic rather than more direct means). Bowser's response? [[AssShove "Hey, put that back!"]]
* GoddammedBoss: Junker. People seem to have a problem with this boss, but he can be literally killed '''''in one turn'''''. You get the final Bros. Attack right before him (Which is a little GuideDangIt moment to get.) and with some proper leveling, you can perform Falling Star twice and kill it before it has a chance to fight back. His X version has twice as much as health though.
* TheGoomba: Goombules for Mario and Luigi, Chuboombas for Bowser. Both of which are based off Goombas, of course. Bowser can summon his own original Goomba for his first special attack.
* GoombaStomp: Enemies try to do it to Bowser in ''Bowser's Inside Story''. Luckily, he can duck under his spiked shell.
* GratuitousEnglish: Broque Monsieur (Brirock in the original) in the Japanese version as well as the French version.
* GratuitousFrench: Broque Monsieur and Broque Madame. Broque Madame even tries to take this into EverythingSoundsSexierInFrench. In Canada, the French localisation set "Mosieur [=DuBloc=]" as an authentic French of France, with all the stereotypes and language differences.
* GuideDangIt: The requirement for getting a perfect 100-point score from the puzzle minigame, made even worse by the fact that few people know about this. No matter how well you do on an individual puzzle, you will only get up to 99 points. [[spoiler:The trick is that it's an event triggered by clearing ''all'' five puzzles in less than 2 minutes. Considering the usual scores are for individual puzzles, this isn't exactly intuitive.]]
* HamToHamCombat: Bowser and Fawful, duh.
* HeavyVoice: The speech vocalizations for the Toads are deeper when they are infected with the blorbs.
* HeavySleeper: Luigi at the beginning of the game. He slept through [[spoiler:[[HeKnowsAboutTimedHits Mario's opening tutorial]]!]]
* HereWeGoAgain: [[spoiler:After everybody gets out of Bowser's body, Bowser becomes enraged at finding out what happened and yet again starts fighting with the Mario Bros. Cue the credits.]]
* HonestAxe: When Luigi is rescued from sinking by Princess Lipid, she asks Mario if he dropped him or a "treasure of everlasting wonder". You don't actually get to choose: she automatically assumes Mario wants the treasure even though that's not the case.
* HopelessBossFight: The first Midbus fight, though it's more of a tutorial.
* HotBlooded: Bowser.
* HumongousMecha: Most of Giant Bowser's foes.
* HyperspaceArsenal: Bowser pulls out a whole bunch of minions (or Broggy) from his shell when he does a minion attack.
* IAteWhat: As previously stated, Bowser has no idea that he consumed his enemies, and isn't happy about it when he finds out.
* IWasToldThereWouldBeCake: [[spoiler:The end of the game.]]
* AnIcePerson: Midbus becomes one of these in the last dungeon. The way this trope is applied also counts as [[IncendiaryExponent Cryogenic Exponent]].
* IncomingHam: "Did someone page the king of awesome?!" He does this multiple times. Basically whenever someone mentions his name out-of-Koopa, he shows up.
* InfernalRetaliation:
** One of Bowser X's attacks starts off with a simple fireball attack. Upon one of the Bros. hitting it back with a hammer, it sets Bowser on fire, causing him to rain flames on the Bros, then follow it up with a spiked shell ball slam.
** Bowser does it during a minigame in Peach's castle where a giant piranha plant sets his rolled-up shell on fire. He uses it to his advantage and rams the piranha plants to death. [[spoiler: Later, Bowser and Dark Bowser set each other on fire, and both of them roll up into flaming spikeballs trying to tackle each other.]]
* InfinityMinusOneSword: A-OK Wear raises all stats by a good amount and prevents all [[StatusEffect Status Effects]]. While you can only get it once you have the Star Rank and it costs a whopping '''20,000''' coins for one pair, it's possible to earn that much money by having Mario and Luigi go out and explore all the areas that Bowser explored at the beginning (As soon as Bowser rescues the Koopa Troopas). It makes the last two dungeons and the Gauntlet a lot easier.
* InformedAbility: Bowser apparently knows how to give professional massages. He just doesn't ''want'' to, unless there's compelling compensation. Given that he's probably gotten massages from his minions a lot, it's likely he picked up some techniques from them.
* InsistentTerminology: DoubleSubverted with the Miracle '''Toadley''' Cure. At first, he insists Starlow refer to the Miracle Cure by its full name, but then he seems to have dropped the issue soon after. Yet if you talk to him later, he's muttering the full name under his breath.
* IntentionalEngrishForFunny: Fawful has passed down his speaking style to his [[TheDragon dragon]], Midbus. However, it's nowhere near as bad, and he simply speaks in a somewhat redundant fashion like the badly translated/dubbed kung-fu movies.
* InterspeciesRomance: The [[SickeninglySweethearts Koopa Troopa]]/[[CrackPairing Boo]] couple in Bowser Castle.
* JustEatHim: The game would have been very short if Bowser had chewed.
* LadyLooksLikeADude: It's easy to think Starlow is male, when she's actually quite female. The only in-game hint to her gender is a set of feminine eyelashes on her character art...which you only see after you beat the final boss.
* LaserGuidedKarma: Bowser's entire history with the second Star Cure. Before the events of the game, Bowser entered the house of a sage named Kuzzle, who greeted him amicably and challenged him to solve a jigsaw puzzle. Bowser couldn't figure it out, and in a rage attacked him, trashed the place and stole his Star Cure. But having no use for it, he put it away in a safe in his castle. Cut to the game's events, and in his efforts to reclaim the Star Cure in a time of need, he [[spoiler:gets betrayed by two groups of people he had previously treated well, is severely injured by one of them, is forced to solve a jigsaw puzzle to remember the safe's combination, and is finally locked within the safe himself]].
* LaughablyEvil: Bowser in particular as a VillainProtagonist.
* LampshadeHanging: Bowser does this when he badgers his Goombas about how they are supposed to fight.
--> Bowser: "[[GoombaStomp Marching straight ahead at the enemy's feet]]." Didn't you all memorize that at Goomba Boot Camp?
* LighterAndSofter: When compared to [[VideoGame/MarioAndLuigiPartnersInTime the previous game]].
* LittleMissSnarker: Starlow a.k.a. "Chippy" so very much.
* LowLevelRun: Finishing the game with Mario at Level 17 or lower will give you a message admiring your dedication. Though it has been confirmed by a few players, this is often regarded as an UrbanLegendOfZelda by many, which is not helped by most FAQ's claiming that the message can be received with Mario ''or'' Luigi under Level 17.
* MakeMyMonsterGrow:
** A rare heroic version in that Mario and Luigi must make Bowser grow at certain points in the game.
** Dark Star Core [[spoiler: which is Fawful]] can temporarily double [[spoiler:Dark Bowser's]] size. [[spoiler:When this happens, punch him in the gut to make him cough up the little bastard.]]
* MalevolentMugshot: Everything is designed like Fawful. For some reason this includes pictures[=/=]statues of Bowser with Fawful's glasses and Peach statues with modified heads.
* MeaningfulName: Midbus is the midboss. (And the third-to-last boss.) [[DubNameChange Midboss is actually his name in Japan,]] [[VideoGame/DisgaeaHourOfDarkness but he's no Dark Adonis.
* MegatonPunch: One of Bowser's primary attacks. At the end of the game, [[spoiler:Bowser finishes off Dark Bowser with five of these in a row, the last of which is a particularly devastating one.]]
* MightyGlacier: Bowser is ridiculously powerful compared to the Mario Bros., but almost everything will outspeed him.
* MirrorBoss:
** [[spoiler: The final boss battle of the game is Bowser versus the Dark Star turned into Dark Bowser, a clone of him. One of its attacks is to punch him, which must be countered by Bowser's own punch, followed by a shell slam, which must be countered by Bowser's Shell Shield. He also uses Bowser's various abilities, such as fire breath, and even (when giant) mimics a Bowser Army attack.]]
** Bowser Memory M and Bowser Memory L are a particularly bizarre example.
* MixAndMatchCritter: Midbus, who's a pig with an armadillo shell.
* MoodWhiplash: For most of the game you are treated to a cheerful, upbeat soundtrack, and then you get to the respective final bosses and the tone of the music becomes melancholy.
* MotorMouth: Luigi takes the cake in some scenes where he [[SpeakingSimlish talks]].
* MythologyGag:
** There's a segment where Luigi gets stuck from the waist down inside a Sockop, a monster that looks like a green boot, in what is almost certainly a reference to the "Kuribo's Shoe" from ''VideoGame/SuperMarioBros3''. It even lets him walk safely over thorns and other hazards like the Kuribo's Shoe. And just in case it wasn't clear, you later see a Sockop ''named'' Kuribo.
** This is a bit of a stretch, but during the BossBattle with Junker, a bucket falls onto one of the Bros.'s heads and you (the player) must guide them around, avoiding being crushed by Thwomps. This is very similar to the premise of the [[NoExportForYou Japan-only]] ''Mario & Wario'', where the fairy Wanda must successfully guide Mario through a level, while one of various items is obscuring his vision. One of said items is a bucket.
** Bowser Memory M and Bowser Memory L's attacks are based on previous ''SuperMarioBros'' games. Mario finds a [[InvincibilityPowerUp Super Star]], or he finds a mushroom and starts breaking blocks. [[VideoGame/LuigisMansion Luigi is chased by a ghost]].
** The boxart is based off the Japanese Box art for ''VideoGame/MarioAndLuigiSuperstarSaga''.
* NeverSayDie: When Midbus confronts Mario and Luigi, Starlow gives us this little gem: "[[ParodiedTrope YOU GOT A KO WISH?!]]"
* NewPowersAsThePlotDemands: Played straight at the beginning with Peach's sudden "Wish Power" that never gets used again.
* NiceHat: Fawful's rocket hat after he powers up, which the Brothers have to destroy before Bowser can actually fight Fawful, lest the hat continually regenerate his health far faster than Bowser can take it down.
* NoblewomansLaugh: Princess Lipid.
* NoFameNoWealthNoService: The heroes can't enter two high-class shops in the Mushroom Mall until they've proved that they're the right sort of clientele... even though most inhabitants of the Mushroom Kingdom recognize Mario on sight.
* NonFatalExplosions:
** Accidentally setting off an entire storeroom of Bob-ombs does nothing more than send Bowser across the world map.
** [[spoiler: Fawful [[TakingYouWithMe blows himself up]] at the end of the game, which not only doesn't harm Mario, Luigi or Starlow in the slightest, but propels everyone out of Bowser's body and only gives Bowser himself a spicy taste.]]
* OcularGushers: Luigi does gushers of ''joy'' when Mario saves him in Bowser's body, and the Chuboombas do this when Bowser eats their lollipops.
* OhCrap: The usual reaction to Giant Bowser, from the Monty Moles seeing him tower above their train with a train to the entire Toad Town screaming in horror.
* OneHitPointWonder: The Daredevil Boots turn either Mario or Luigi into one of these, ''doubling'' their attack power but causing them to go down in one hit regardless of their health.
* OneManArmy: Holy heaven and hell, Bowser. [[spoiler: He literally has to fight through an army of a couple dozen mooks assaulting him just to make it to the FinalBoss--and this is merely one of said boss's attacks!]]
* OneWingedAngel:
** [[spoiler:Dark Fawful/Dark Star Core]] can turn into a [[CognizantLimbs multi-limbed]] monstrosity.
** Pretty much every later boss in the game as well as the giant bosses.
* OnlyKnownByTheirNickname: Starlow's name is mentioned all of once in the prologue, once in the ending, and once almost exactly halfway between. One can be forgiven for thinking of her throughout the ''entire rest of the game'' as "Chippy" -- all of the good guys know her real name, but two are silent protagonists, and Peach spends most of the game captured or sitting in town.
* OutsideTheBoxTactic: Some regular enemies can be defeated instantly by a specific move, like Bowser's firebreath on Bob-Ombs (trapped in Jailgoons). However, some will just cause the enemies to retreat, thus netting no XP from them.
* PalmtreePanic: Plack Beach, which has an odd tooth decay theme. It's actually called "Tooth Decay Beach" [[note]]Musshība Beach[[/note]] in the Japanese version, doing away with the {{pun}} entirely.
* PlayingWithFire: Bowser's flame breath and the Fire Flower special attack.
* ProductPlacement: Parodied with such "fads" as Launch Fit, Slide Fit, etc.
* PromotedToPlayable: Bowser.
* {{Pun}}:
--> '''Fawful''': "A nuisance barge barging in at a critical time for us!"\\
'''Bowser''': "Nuisance barge? GWAHAHA! Buddy, you're like a nuisance SUPERTANKER!"
* PuppeteerParasite: Chain Chawfuls are Chain Chomps brainwashed by a Fawfulized parasitic worm in their head. Bowser can inhale the parasite to kill it, which frees the Chain Chomp from the mind control. But you don't EXP.
* PuzzleBoss: Several bosses need a very particular strategy (such as one specific brother attacking an appropriate weak point, or using the boss's [[FlunkyBoss flunkies]] [[DeathByIrony against him]]) to defeat.
* {{Railroading}}: Hard. Some times, Bowser will refuse to go anywhere (or is incapacitated), forcing you to use the Bros, even though you'd like the opportunity to just go back to Dimble Wood and give Broque Monsieur those damn Blitties. [[spoiler: This trope is literally put into effect when Bowser is nearly killed by a train.)
* RecurringBoss: Midbus for Bowser. Bowser for the Mario Bros.
* {{Retraux}}: At one point, Mario and Luigi go into Bowser's memory and get forced to fight old-style versions of themselves.
* RhetoricalQuestionBlunder: Does Dr. Toadley answer his own questions? He certainly does.
* RingOutBoss: The Tower of Yikk, Bowser's second giant opponent. Made easier by how easy it is to stop him from escaping the water afterwards.
** Peach's castle, when it creates a second black hole. You'll need to punch it into the black hole behind it and avoid getting knocked into the one behind yourself (It'll use an AlwaysAccurateAttack to knock Bowser in anyway).
* RoboSpeak: The mechanised form of Princess Peach's Castle that's Bowser's final giant battle foe. ''ACTIVATE BLACK HOLE ENDGAME!''
* RoyalWe: Princess Lipid.
* RoyalsWhoActuallyDoSomething: Bowser. In fact, as much of a DumbMuscle he may be, he seems to be the ''only'' one who does something useful in the Koopa Kingdom. Any other Bowser Baddie with a shred of competence ends up [[BrainwashedAndCrazy betraying him for Fawful]]. Lampshaded, where Bowser angrily shouts to his Goombas trapped in cages that while they're busy playing "Cram in the Cage", he gets things done!
* TheRuntAtTheEnd: One of the Blitties in a perfectly-executed Broggy Bonker and one of the Goombas in the Fawful Theater.
* ScoobyDoobyDoors: The Magic Window attack. The bros hop into a disappearing, reappearing window and continually hop out onto enemies in random order until you miss a hit; either Mario, Luigi, or both at the same time. The frequency of the hops speeds up as you continue to get it right, and when it ''really'' gets going, you can actually see multiple copies of the same bro onscreen at once.
* SealedEvilInACan: The Dark Star. Doubles as an ArtifactOfDoom.
* SegmentedSerpent: Wiggler is fought like this. Like most examples, the head is the weak spot. Unlike most examples, you want to target his ''body segments'' first, as its head is immune to damage until you turn all of the body segments yellow (by damaging them).
* SelfDisposingVillain: [[spoiler: Fawful]]
* SelfImposedChallenge: If you get a high enough score in the Green Shell mini-game, you will recive an accessory called the Challenge Medal. This makes all of the enemies in the game a score tougher, but nets you extra Gold, effectivley putting the game on hard mode.
**
* SequelDifficultySpike
* SequenceBreaking: Generally very hard to pull off, but after the first Star Cure, you can get six of the needed Attack Pieces in Dimble Woods before you should. You still can't get past the Wiggler though.
* ShadowOfImpendingDoom: Happens three times to Bowser, by ''his own castle'', then by the Tower of Yikk, then by [[spoiler: Peach's Castle]]. The second time, he even tries to recall what happened, but gets squashed before finding out. As for the third time, Bowser had no time to react before it squashed him.
-->Bowser: "Weird! It got dark! I feel like this sort of thing happened before... And then..." *Stomped*
* ShootTheMedicFirst:
** Bowser's Memory ML. If you take out M first, L will revive him with a 1-UP if given a chance.
** For a more indirect definition of "medic", one enemy is a Thwomp with a head cold that is more easily dispatched if you remove its ice pack first.
** Not to mention the alligators that can't eat their healing beans if they don't have ''teeth''.
** The battle against Dark Fawful has his helmet, which heals him for 300 hp very often. [[spoiler: You need to suck it in when it detaches.]]
* ShoutOut:
** The English localization seems to feature references to internet memes. Fawful's first line of dialogue in the game is [[AWinnerIsYou "A Winner is you!"]] and after the boss fight at the Toad Town clinic, Bowser uses the phrase "Cry Moar". (Though he spells it ''more''.)
** There may also be the enemy named Fawfulcopter. However, they don't go "Soi soi soi"
** Midbus's final form seems to resemble Ganon. Also, that logo on his shoulder looks suspiciously similar to the Pigmask logo in ''Videogame/{{MOTHER 3}}''...
** Remember the Boo and the Koopa who are referred to as "Honey" (the female) and "Darling" (the male)? Doesn't that sound a [[VideoGame/TheLegendOfZeldaOcarinaOfTime little]] [[VideoGame/TheLegendOfZeldaMajorasMask familiar?]]
** One of the enemy types in Bowser's Castle is [[SonicTheHedgehog a robot cage with one of Bowser's minions trapped inside. Defeating it frees the minion.]]
** Fawful sings a song reminiscent of the ''WesternAnimation/ScoobyDoo'' theme in one scene.
** Private Goomp, Sergeant Guy and Corporal Paraplonk each share the same rank and coloration as three characters from ''Manga/SgtFrog''.
* ShutUpHannibal: As can be expected of him, Bowser has very little patience for pre-battle taunts and banter when he's being controlled by you.
-->'''Bowser''': Bah! You like compost? I'll compost ''your FACE!''
* {{Smurfing}}: The Emoglobins have a [[strike:habit]] globin of [[strike:replacing]] globining a word or two with "globin." Some [[strike:players]] globins don't like this [[strike:feature]] globin, but they don't [[strike:under]]globin-stand. [[MemeticMutation IS THAT NOT GLOBIN?!]]
* SlasherSmile: Fawful. Even creepier when he gives a real chortle. Doubly so when he [[spoiler: tries to take out Mario and Luigi as he dies]]
* SoundtrackDissonance:
** Because nothing portrays the quest of a giant angry turtle like cheerful, upbeat background music. Especially Bumpsy Plains / Blubble Lake.
** EVERY BOSS except for the final boss and giant bosses has the same cheery, light-hearted boss music, even Alpha/Beta Kretin, who just kidnapped Peach, the fight between the Bros. and Bowser, [[spoiler: the Dark Star, and Dark Fawful, both of which are part of the BossRush (though one in plot only) at the very end of the game.]]
* SpikeballsOfDoom: Bowser becomes one during his Shy Guy Sling move, as well as when he gets the ability to roll around out of battle.
* SpikesOfVillainy: Subverted; Bowser's Horn stat has the same function the Bros' Stache stat does.
* TheSpiny: Certain enemies have spikes on their back or are on fire, jumping on these will make Mario or Luigi take damage.
* StealthPun:
** Midbus and Fawful. [[spoiler: Pork and Beans, respectively.]]
** [[RuleOfThree Broque Monsieur and Broggy.]] Say "block monster" and "blocky" with a heavy French accent. "Broque Monsieur" and "Broque Madame" are also puns on "croque-monsieur" and "croque-madame", types of French grilled sandwiches.
** A Boo and a Koopa Troopa [[InterspeciesRomance are in love]]. This gives ''[[spoiler:Anime/GhostInTheShell]]'' a new meaning.
** Nutsoglobin is a pun on "nutso" meaning "crazy" and "not so globin", where "globin" could mean anything in this context.
** How does Bowser lose all of his weight after getting fat? Literally burning calories. (The fat burns from him)
* StopHelpingMe: [[invoked]]In the first Midbus battle, Fawful ends up doing this to Midbus by attempting to warn him of Bowser's attacks, which actually serves as a tutorial for the player. [[HopelessBossFight Not that it hurts Midbus much...]]
* StormingTheCastle: With a twist; [[spoiler:[[AllYourBaseAreBelongToUs it's Peach's castle you're storming, while it's under Fawful's occupation]]]].
* StupidityIsTheOnlyOption: The "victory" feast. You must control Bowser to eat food before the Boos force-feed him.
* SupportingProtagonist: It's actually Bowser that takes center stage in this game. Mario and Luigi are just there to help him out.
* TacticalSuicideBoss:
** If the Monty Bros. didn't come out of the Fawful Express to bomb Bowser, they would have had a ''much'' better chance of escaping and winning[[note]]Countering the bomb attack does HUGE damage to the Fawful Express, even more than an 'Excellent' fire breath[[/note]].
** Dark Star's summoning of Dark Satellmites. Hitting a Dark Satellmite back into it will make it vulnerable.
** [[spoiler: Dark Bowser growing via help of the Dark Fawful Bug. Thanks to this, Bowser is able to punch Dark Bowser's stomach and force him to cough up the Dark Fawful Bug.]]
* TakenForGranite: Subverted by [[spoiler: Chakron]], who has stood in one position so long his muscles have locked like that. Also subverted in that he's happy like that, and actually becomes upset when you break him out of it.
* TakingYouWithMe:
** [[spoiler: Fawful tries it on the Bros. at the end of the game.]]
** The Dark Star does it as well as a final attack in the first battle, though it's not really defeated.
* TemptingFate:
** The things the Fawful Express Mole crew say before/during the battle with Giant Bowser are exactly the most idiotic things possible, including their entire plan via villain monologue and their weakness.
** Fawful at the beginning, giving Bowser an unintentional tutorial when watching him fight [[TheDragon Midbus]].
** Bowser, before entering his vault: "This is one place that stupid Fawful NEVER could break into!". Then he goes in and sees the train tracks...
* ThemeNaming: Fawfulized enemies will have part of their name replaced with part of Fawful's name (Crocodile-Crawful, Chain Chomp-Chain Chawful, Monty Mole-Mawful Mole, etc)
* TheMole: [[spoiler: Literally and played straight. The Monty Mole Brothers reveal themselves to have been working with Fawful all along, right before running Bowser over with the Fawful Express.]]
* ThrowTheDogABone: In the ending, [[spoiler:Bowser, after helping to put an end to Fawful, destroy the Dark Star, and find a cure for the blorbs; challenges Mario and Luigi to a fight and yet again gets the hell beaten out of him during the credits. However, as he is nursing his wounds at his castle, he receives a thank-you cake from Peach and the Mario Bros]].
* TieredByName: All of the bosses from the Challenge Node are bosses from the main story made more powerful. They all have the same name as the original bosses but with "X" at the end of their names. [[spoiler: Even the bonus boss Bowser X]].
* TimeLimitBoss: You only have a set number of turns to defeat the Fawful Express, otherwise the road ends in an unstable bridge and Giant Bowser will fall as an instant GameOver.
** You also have a turn limit when fighting the Challenge Node bosses.
* ToiletHumor: Wisdurm farts in Luigi's face. Possibly also TruthInTelevision, as some types of insects in real life actually do expel gas from their abdomen to deter predators.
* TooDumbToLive:
** Bowser has quite a few moments of questionable rationale. He wouldn't be Bowser if he didn't, though. For instance, he gorges himself on an entire kitchen's worth of food, and then deciding to work it all off in a single gym pass. The player can repeat this as many times as they want.
** Every single Toad suffering from the Blorbs reports having been offered a Blorb Mushroom by a mysterious stranger, and then eating it. ''They are literally eating strange mushrooms with the same name as the disease it causes.''
* TookALevelInBadass:
** Bowser (with the help of Mario and Luigi, of course, but still a welcome relief from the severe case of VillainDecay).
** Not to mention [[spoiler: those Shroobs in Bowser's Castle]]. Just take a look at their stats [[http://www.mariowiki.com/Shroob#Mario_.26_Luigi:_Partners_in_Time before and after.]]
** Fawful goes from the second-in-command [[TheDragon Dragon]], downgraded to a shop owner, and suddenly is the primary boss of the game? In fact, one could argue he made an even better villain than his old mentor Cackletta...
* TrainingBoss: Bowser, who is the first boss for the Mario Bros.. Midbus, who is Bowser's first boss. After that, Broque Monsieur who teaches how Bowser and the Bros. can fight together.
* TrueCompanions: Bowser and his minions.
* UndergroundLevel: 'Tunnel Under Construction'. It's a large circuit that can be used to get around quickly as Bowser.
* UndergroundMonkey: Many of the enemies are even more variations on the classic Mario foes, either at a cell level inside Bowser's body, or beefed up for Bowser himself to fight. Some are quite creative, while others are simply regular enemies under Fawful's MindControl.
* UnreadablyFastText:
** [[spoiler:One of the Goombas when Bowser is inside his castle for the first time after Fawful's takeover.]]
** Some of the Magikoopa's as well.
* UnstoppableRage:
** Any of the Giant Bowser fights, in which the Brothers must supercharge Bowser's adrenaline and turn him into a giant [[{{Kaiju}} Godzilla-like]] destruction machine (probably a reference to either Giga Bowser from Smash Bros or the final battle of Yoshi's Island) to fight a huge enemy.
** In regular battles, if Bowser takes enough damage he'll get angry and [[TurnsRed Turn Red]] (literally), raising his attack power but decreasing his defense.
* VariableMix: There are two tracks for everywhere in the game, one for when you're walking around outside as Bowser and one for when you're inside Bowser.
* VerbalTic:
** The Emoglobins all have very globin-ish and strange-ish speech patterns. They tend to [[{{Smurfing}} use too much-ish of the "Globin"]] in the talking, but that is to be expected from creatures possessed of such a globin. IS THAT NOT GLOBIN?
** The Moles tend to put 'bro' in every one of their sentences, leading to things like broski.
--> ''Mole (Upon seeing Giant Bowser)'': BRO NO!
* VillainProtagonist: Bowser is a playable character. His designs aren't exactly altruistic, although the Mario Bros. do their best to manipulate him into not being a complete jerk all the time.
* WarmUpBoss: The Sea Pipe Statue.
* WaveMotionGun: Dark Star uses this attack as both itself and the Fawful bug, requiring both brothers to jump onto Starlow during the charge-up time or else take major damage. The original Dark Star (and its X variant) will also pursue the brothers after the attack for just as much damage. Bowser's fire breath acts the same way.
* WeaponsThatSuck: Not exactly a "weapon", but the Vacuum Block allows Bowser to suck up Blitties, small enemies, as well as parts of larger ones. It's ''far'' from sucky too, as almost all enemies that Bowser encounters are hampered by it in some way, or have an associated enemy that can be sucked up.
* WhatHappenedToTheMouse:
** Wisdurm is never shown leaving Bowser's body.
** The Miracle Cure, which was used to destroy the barriers on Peach's Castle, then was never heard from again. This is after the heroes talk about using it against the Dark Star.
* WhatTheHellHero:
** Broque Monsieur hates Mario since bashing in coin blocks "decreases their value" and makes business harder for him and thus will tell the Bros. to get out of his shop, albeit politely.
** Parodied with the Wiggler. He tells Bowser to "take responsibility" for pulling up the Giga-Carrot by eating it for the [[MacGuffin Banzai Bill]]; when Bowser does, Wiggler gets mad and, rather than cough up the Bullet Bill as he promised, starts a fight! And the ''Koopa King'' needs to own up for his actions? Note that he got mad and attacked you not because you pulled the carrot up, but because you ate it, ''[[InsaneTrollLogic which he told you to do.]]''
* WhenTreesAttack: Treevils in Dimble Woods. Like most plant-based enemies, KillItWithFire.
* WhereItAllBegan: The game begins and ends at Peach's Castle.
* WombLevel: Most of the bros' stages.
* TheWorfEffect: Like in every ''Mario and Luigi'' game, you fight Bowser at the beginning, and he's an absolute pushover. [[JustifiedTrope Justified this time]], as his abilities are being weakened by Peach and Starlow. You even fight him later in the game at his full potential, and he puts up quite a fight.
* WrapAround:
** Certain enemies do this, by going off one side of the screen and coming back from the other.
** The Crawful enemy after it loses its teeth--the bean it tries to eat gets shot off the left side of the screen, only to land on its head from the right side of the screen.
* YouAreNotAlone: Bowser gets this at the end of the game from Chippy, who tells him that Mario & Luigi have his back. He doesn't hear them, and kicks butt himself regardless.
* YouCantThwartStageOne: You can't stop Fawful from taking over Bowser's Castle, kidnapping Peach, stealing the Dark Star, and awakening it. Even Mario and Luigi's hunt for the Dark Star consists of nothing but failed attempts to stop it.
* YouHaveResearchedBreathing:
** It takes about 30 minutes of in-game progression for Bowser to learn the exquisite art of lying on the ground with his spiky shell pointing up for the purpose of defending from airborne attackers.
** At no point in the game do Mario and Luigi ever have the ability to wear overalls, gloves, socks, AND shoes at the same time. Given, they eventually learn how to wear two or three of these four items at a time...
* ZergRush: Bowser's Goomba Storm invokes this. Broggy Bonker sees Broggy followed by the Blitties you collected. [[RuleOfFunny One of them]] [[TheRuntAtTheEnd lags behind.]]

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