History NightmareFuel / TheAdventuresOfSuperMarioBros3

-->'''Mario:''' You gotta take charge, Luigi. I'm fading fast... Koopa! Koopa!

* While King Koopa is a dastardly villain, there are some parts of the show that prove Mario and his friends aren't afraid to give him a taste of his own medicine either. In "Do the Koopa", they steal the Doom Dancer Music Box with the intent of making him ''dance until he dies'', and in "Oh, Brother," after Kooky's own mind control helmet falls on him, they command him to chase after his own father, with full intent to "[[IronicEcho smash, crush, pound, destroy]]."

** Also there's Madzilla's mother. Yes, she was built by the Marios but no wonder Kootie Pie and Big Mouth wanted to get back home so badly.

* Kooky's psychotic LaughingMad demeanor. It's no wonder that role shifted to Iggy in later adaptations.

* Koopa menacing the Real World can be scary for kids.

* "Recycled Koopa" has Koopa's trash [[SlowTransformation turning the inhabitants of Brooklyn]] [[ZombieApocalypse into Koopa zombies.]]

* The Piranha Plants and Nipper Plants look ''[[UncannyValley terrifying]]''.

** Luigi's face when scaring the Boos (as shown in the picture above), while a [=CMoA=], is still pretty terrifying.

[[quoteright:304:https://static.tvtropes.org/pmwiki/pub/images/misadventure_babysitting_3_3032.jpg]]
[[caption-width-right:304:[[GameFace You know it's scary when even the ghosts are terrified.]]]]

* The infamous scene in the first episode where Raccoon Mario gets bit in the leg by a [[UncannyValley Nipper Plant]] not only takes the cake for this show's NightmareFuel, ''but the entire bakery.'' To explain, Raccoon Mario & Luigi arrive at Prince Hugo's castle just as the Sneaky Lying Cheating Giant Ninja Koopas capture Hugo. Toad tells the Koopas that the Mario Bros will make them sorry, resulting in Giant Big Mouth Koopa blowing a mini tornado at Mario [[note]] Big Mouth's line "''I'll make THEM sorry!''" unintentionally seems like he's talking to [[TheFourthWallWillNotProtectYou the audience]] when you consider what happens afterwards. [[/note]] which makes him land between a short and tall pipe. Then...'''IT''' appears, complete with a dramatic zoom in when Mario notices it, and creepily unusual sound effects. As Raccoon Mario dramatically gasps, the plant ''bites him in the leg'' complete with (now regular) Mario yelling "''YOW!''" afterwards. As if that wasn't enough, ''the plant tries to '''bite him AGAIN''''', though at least he (barely) dodges the second strike. The weird, unsettling sounds throughout the scene, combined with the camera, the plant's design, Mario's reaction & ''THE BITE ITSELF'' result in a scene that's absolutely [[NightmareFuel terrifying]] for teens and adults, ''[[WhatDoYouMeanItsForKids let alone the target audience!]]'' [[ArsonMurderAndJaywalking Oh]], and remember the creepy Ice Land remix mentioned above? '''THIS''' scene is the first time that it plays.

* While King Koopa is a dastardly villain, there are some parts of the show that prove Mario and his friends aren't much better. In "Do the Koopa", they steal the Doom Dancer Music Box with the intent of making him ''dance until he dies'', and in "Oh, Brother," after Kooky's own mind control helmet falls on him, they command him to chase after his own father, with full intent to "[[IronicEcho smash, crush, pound, destroy]]."

* Kooky's psychotic LaughingMad demeanor. It's no wonder that role later shifted to Iggy in later adaptations.

* In "Do the Koopa", Koopa plans to make the whole Mushroom Kingdom [[MagicMusic dance until they're dead]] by way of the [[MindControlMusic Doom Dancer music box]]--[[AndIMustScream whoever hears it]] ''[[AndIMustScream cannot]]'' [[AndIMustScream stop dancing.]] [[spoiler: Thank goodness Luigi had that plumbers' putty.]]

* The infamous scene in the first episode where Raccoon Mario gets bit in the leg by a [[UncannyValley Nipper Plant]] not only takes the cake for this show's NightmareFuel, ''but the entire bakery.'' To explain, Raccoon Mario & Luigi arrive at Prince Hugo's castle just as the Sneaky Lying Cheating Giant Ninja Koopas capture Hugo. Toad tells the Koopas that the Mario Bros will make them sorry, resulting in Giant Big Mouth Koopa blowing a mini tornado at Mario [[note]] Big Mouth's line "''I'll make THEM sorry!''" unintentionally seems like he's talking to [[TheFourthWallWillNotProtectYou the audience]] when you consider what happens afterwards. [[/note]] which makes him land between a short and tall pipe. Then...'''IT''' appears, complete with a dramatic zoom in when Mario notices it, and creepily unusual sound effects. As Raccoon Mario dramatically gasps, the plant ''bites him in the leg'' complete with (now regular) Mario yelling "''YOW!''" afterwards. As if that wasn't enough, ''the plant tries to '''bite him AGAIN''''', though at least he (barely) dodges the second strike. The weird, unsettling sounds throughout the scene, combined with the camera, the plant's design, Mario's reaction & ''THE BITE ITSELF'' result in a scene that's absolutely [[NightmareFuel terrifying]] for teens and adults, ''[[WhatDoYouMeanItsForKids let alone the target audience!]]'' [[ArsonMurderAndJaywalking Oh]], and remember the creepy Ice Land remix mentioned above? '''THIS''' scene is the first time that it plays. [[SarcasmMode Thanks, DiC]]!!

* The Boos taking over the Mushroom Shopping Mall in "Reign Storm" with the Mushroomers fleeing in terror. One Boo even ''[[BodyWipe flies toward the camera]].'' Yikes.

* Virtually everything that happens to that poor family from "Mush-Rumors". Their car crashes and nearly gets totaled in an unfamiliar fantasy land, everyone accuses them of being aliens and the Koopas shoot Bob-ombs at them before abducting them in the Doomship. To top it off, Kooky ''hooks them up to a machine to ANALYZE THEIR BRAINS!'' Surreal and disturbing just doesn't begin to describe the experience.

''WesternAnimation/TheAdventuresOfSuperMarioBros3'', being the most faithful animated adaptation of Mario Bros., had its [[NightmareFuel scary moments.]]

* Mario turning the Great Wall of China [[ScaledUp into a dragon]] in "7 Continents for 7 Koopas". Yes, Bully spraying graffiti on the wall was wrong, but it's practically harmless compared to what Mario did to it.

* The Ice Land remix that plays in the show is scary in of itself.

* The Boos taking over the Mushroom Shopping Mall in "Reign Storm" with the Mushroomers fleeing in terror. One Boo even ''flies toward the camera.'' Yikes.

* Mario turning the Great Wall of China [[ScaledUp into a dragon]] in "7 Continents for 7 Koopas".

** Luigi's face when scaring the Boos, while a [=CMoA=], is still pretty terrifying.

* Imagine yourself in that poor family from "Mush-Rumors". Your car crashes and nearly gets totaled in an unfamiliar fantasy land, everyone accuses you of being an alien, strange turtle-like beings abduct you in their mysterious flying ship and to top it off, they ''hook you up to a machine to HAVE YOUR BRAIN ANALYZED!'' Surreal and disturbing just doesn't begin to describe the experience.

* "Misadventures in Babysitting" has the scene where the [[{{WouldHurtAChild}} Koopa Kids]] [[YouHaveOutlivedYourUsefulness throw Junior in the pipe maze.]] On top of nearly getting crushed by Thwomps and frightened by Boos, there's the threat of him nearly burned alive by lava.

* In "Do the Koopa", Koopa plans to make the whole Mushroom Kingdom [[MagicMusic dance until they're dead]] by way of the [[MindControlMusic Doom Dancer music box]]--[[AndIMustScream whoever hears it]] ''[[AndIMustScream cannot]]'' [[AndIMustScream stop dancing.]] [[spoiler: Thank goodness Mario somehow had that plumbers' putty.]]

* With the way he treats his siblings, Bully Koopa counts for those who grew up with a BigBrotherBully.

* "Misadventures in Babysitting" has the scene where the [[{{WouldHurtAChild}} Koopalings]] [[YouHaveOutlivedYourUsefulness throw Junior in the pipe maze.]] On top of nearly getting crushed by Thwomps and frightened by Boos, there's the threat of him nearly burned alive by lava.

* "Misadventures in Babysitting" has the scene where the Koopa Kids [[YouHaveOutlivedYourUsefulness throw Junior in the pipe maze.]] On top of nearly getting crushed by Thwomps and frightened by Boos, there's the threat of him being burned alive by lava.