Mario is an Italian plumber originating from Nintendo's Super Mario franchise, serving as the central character and main protagonist of the first two seasons, before sharing the latter role with SMG4 for the remainder of the SMG4 series.
He is the older brother of Luigi, the designated hero (a loose term) of the Mushroom Kingdom, (formerly) the archenemy of Bowser, and the lover(?) of Princess Peach. He sometimes refers to himself as Mario the Sexy Plumber.
In SMG4's videos, as opposed to his selfless heroic portrayal from the Nintendo canon, Mario is portrayed as an immensely dumb, narcissistic jerk befitting the comedic nature of the series. His annoying and stupid behavior often antagonizes and ruins people's lives. Yet when things are at their absolute worst, he's capable of even an ounce of selflessness and compassion, and presently is becoming more like his canonical self.
For the longest time, it was uncertain whether Mario was a hero or a menace to the Mushroom Kingdom. In earlier days, Mario didn't really care about his heroic status, preferring to eat, sleep, or do whatever he wanted. He also loved pulling pranks on people (read Toad, SMG4, Luigi, Bowser) and carried pairs of panties wherever he went. The people closest to him learned to cope with his daily idiocy (for some, like the aforementioned Luigi and SMG4, they more or less have functional friendships with him, whereas Toad can hardly stand to be in the same vicinity as him), especially these days.
In SMG4: Bowser Loses Custody Of His Children, Peach, severely annoyed by Mario's incompetence at raising his "simulation child", said he was a menace to society and would probably not have any children if he kept acting terribly.
Mario's origin in the SMG4 universe is convoluted and thus virtually unknown, due to contradictory information. According to how Mario was born, Mario was born out of a cosmic event and crashed in Nintendo's headquarters. While on a playground, he reproduced (due to a problem in his genetic makeup) and gave birth to Luigi (which would make him Luigi's birthparent). After taking refuge in a dumpster, SMG4 found the two brothers and offered them jobs. Mario himself debunked this story, as the book detailing this was written by some hobo.
In The (TOTALLY ACCURATE) Documentary of Mario, his origin was retconned, and it was revealed that he was born in 1928 (though this might be a joke since if Mario was born at that time, he would be 91 years old today). However, his unknown father was apparently disgusted at Mario's appearance and tried to kill him with a combat knife to "prevent him from laying eggs." This incident was accidentally photographed by either his mother or a doctor for his celebration card, where he was mistaken for a girl. Instead of being happy though, his parents abandoned him on an alley (it was possible that it was the father's idea and the mother was reluctant) and sped off, accidentally crashing and dying. As a result, Mario grew up without any parental love, resulting in his stupidity and selfishness.
2 years later, Mario was found and taken to an orphanage where he met Luigi and formed a bond with him. (though Mario would occasionally mistreat him) When Mario and Luigi attended high school, Mario wasn't much of a great student but was nevertheless popular at the time. He, however, had a tendency to dance in the shower and it was also here where his spaghetti addiction started. At some point, he started taking drugs. These led to horrible consequences, however, and Mario started acting completely insane and weird, such as trashing an office and speaking in German despite being Italian, spooking his classmates on a pool, dancing on the roof, and finally burning the school down to the ground, much to the principal Larry Fattman's frustration and resulted in him hating the man forever. As a result, Mario's reputation hit rock bottom, and it would take 2 to 3 years before he recovered.
Afterward, Mario and Luigi searched for a job and joined The Plumber Academy for Idiots, and though Mario did not graduate (as he apparently must have missed 3 years of class), he still got the job. Some years later, he was called by Princess Peach Toadstool to help clean up her castle (or, as she puts it, "clean her shit"). There he met Bowser for the first time and traumatized the Koopa King by making him drop his sandwich. Ever since then, Mario visited the castle more often (though his stupid antics resulted in Toad - who initially liked him - to hate him and everyone else in the castle, turning the once-happy mushroom into the grumpy midget he is today). At some point, he also became Nintendo's mascot, but due to rumors about him taking drugs again, he was fired but retained his mascot status.
What can be proven is that he's a native of the Mushroom Kingdom, Luigi is his brother, and he was and still is the mascot of Nintendo, and more or less the kingdom's hero.
Mario wears a long-sleeved red shirt, blue overalls with yellow buttons, brown shoes, and gloves. He has a red cap, brown hair, a black mustache, and blue eyes. He is shorter than his younger brother Luigi.
There are only three things that tub of flub cares about.One: Spaghetti. Two: himself. And three: being naked. See, he's over there doing it right now.
In Nintendo canon, Mario is a friendly plumber who helps anyone in need, devotes most of his time to rescuing the princess of the Mushroom Kingdom, and participates in sports matches, kart races and "parties" often.
In the SMG4 universe, however, Mario is a completely different person. While still being kind and having a heroic status, Mario in this universe is more of a lazy, mischievous, foul-mouthed and occasionally selfish fool. He cares mostly about only himself and his favorite dish spaghetti, which he is addicted to and refers to it as his girlfriend or wife, and would trade anything (including SMG4's YouTube account) for it. This addiction went so far that he actually stole spaghetti from other people and never shares it with anyone (except for Meggy). In fact, the mere thought of losing spaghetti will either drive him insane, make him cry in frustration, and even commit suicide. Mario's extreme laziness has made him a hater of socializing (though it was temporary) and exercising. He also refuses to help his friends, family, other people, or possibly even the whole world, even in life-or-world-threatening situations. He doesn't appear to be as brave as his Nintendo counterpart, sometimes trying to back down from fights. He appears to suffer from Attention Deficit Disorder (which makes him incapable of listening or focusing on the task at hand), Down Syndrome (related to his stupidity), Intermittent Explosive Disorder and Bipolar Disorder (both of which are related to his extremely short temper).
Mario is also very disrespectful and disobedient. He constantly does things that other people tell him not to (such as touching the painting leading to the bootleg world in SM64: THE BOOTLEG DIMENSION) which causes problems for his friends and sometimes the world. According to a poster in Mario and the SECRET CLUB, He always eats all the food in the castle and never takes a bath when asked, further showing his disrespectful ways. He is also very short-tempered, capable of getting annoyed easily, and always lashes out at people (including his own brother Luigi) when he reaches his breaking point. Mario is also a sore loser, and can be very demanding and also spoiled.
His biggest flaw though is his IMMENSE stupidity and lack of common sense. He apparently did not know what was 1+1 (which caused him to become a borderline moron) or any number past 10 (aside from 1 million) until Baldi taught him math and had also forgotten how to type or how to count despite having been able to do so in earlier episodes. This idiocy annoyed his friends (except for Meggy, who finds it incredibly hilarious), especially SMG4 and Toad, and they often mocked or berated him for his foolish decisions. As a result, he ruined the Grand Mario Hotel, bankrupted Nintendo by using its money to buy food, ruinedGabe Newell's life, created some of the gang's worst enemies, such as Roprinplup14, and even drove people to the edge of insanity (it is also shown in Plumber Academy for Idiots that he skipped 3 years of plumbing school and missed Kindergarten, forcing him to take them both all over again). Mario though refuses to admit being stupid and claimed to have an IQ of 200. On the contrary, he sometimes uses his to his advantage and there were moments where he was greatly intelligent and logical, the biggest example being in Stupid Mario Stupid Show, where he correctly theorized that SMG4 went insane to try and get millions of viewers.
It is unknown how exactly dumb Mario is, and any explanation shown is very absurd and ridiculous. According to his driver's license, his "how-retarded-meter" shows that he "broke" it. In Portal M4R10 - If Mario was in... Portal, GLaDOS, when analyzing him, stated his IQ was over the negative (-), which is probably another joke (since if Mario was really that dumb, he would probably not know how to speak).
Underneath his laziness and retardation though, Mario does indeed care about his friends and family, seeing as how he time-traveled to prevent himself from accidentally killing his brother Luigi during a kart race, comforted Meggy when she first lost the Splatfest and was in utter distress when both of them were turned into T-Pose Zombies during the Waluigi arc. During the Anime Arc, he was extremely desperate to find and save Meggy when she was abducted by Mario's former Anime Cartel boss Francis to extract her ink. At the end of the arc, Mario reveals that he is self-aware that his life has spiraled out of control, but nonetheless, he still cares about his friends.
In Super Mario 64 Bloopers: Smart(ass) Mario and SMG4: Smart Mario, both of which had Mario becoming smart, he displayed a different personality. In the former, he unintentionally mistreats everyone in the castle due to him forgetting their identities, and even lost his love for spaghetti. In the latter, Mario uses his intelligence to help his friends with their problems. However, his spaghetti addiction still remained, and eventually began to hate his friends for treating him like junk for his former idiocy, which resulted in him trying to steal all the spaghetti in the world. At the end of the episode, he begged the others not to turn him into his old dumb self, believing he would lose any meaning to life.
In SMG4 Christmas 2019: Mario Alone, he was shown to go through a deep depression whenever he feels lonely, to the point where he made crude dolls of his friends to feel better.
Mario has committed various crimes throughout the episodes, either accidentally, out of sheer stupidity, or for a good reason. His latest criminal record is tax evasion.
NOTE: Not necessarily in chronological order.
Assault and Murder: Due to his short temper, Mario has assaulted and killed many people when they annoyed him, the most recent example being in SMG4: Mario Gets Stuck On An Island, where he assaulted and threw an airline pilot out of a plane for insulting him.
Using Confiscated Things and Hijacking: After spaghetti was banned from the Mushroom Kingdom in Spaghetti Law, Mario and SMG4 tried to bring it back by hijacking a truck filled with the dish.
Destroying Companies: While showing a Big Chungus how to make good video games in SMG4: Mario's Big Chungus Hunt, Mario proceeded to dismantle Nintendo, Microsoft and Sony, the three biggest video game companies, by killing Shigeru Miyamoto and Master Hand, shooting down Microsoft HQ, and slapping all of Sony's employees and security guards, all as an example.
Public Nudity: Mario has stripped down in public many times. One such case was in Mario Simulator Interactive if the player chose to have him persuade the cop. It is also implied in R64: A Theatre Mario, that he is a prostitute, someone who engages in sexual activities for payment (yes, it's true, it's all said in his membership card).
Framing: Mario constantly frames people (mainly Luigi) for things that he does just to save his own skin from a beatdown. An example was in a flashback to SMG4: Detective Mario & Pikachu, where he framed SMG4 for murder and made up a terrible excuse that he did it for winning a Super Smash Bros. match. He later used the same excuse at the end of the video when interrogated by Detective Pikachu as to why he stole Bowser's statue, causing the latter to throw him in lava and burn him alive in retribution.
Reckless Driving: Mario sometimes is very bad at driving, which leads to him accidentally causing chaos and killing people. The most recent example was in SMG4: Mario's Prison Escape, where he ran over and possibly killed a citizen with his kart.
Sexual Harassment: Mario sexually harassed everyone in the Mushroom Kingdom by touching their butts in The Mario Channel: MARIOBUSTERS. This aggravated SMG4 and many others to no end.
Unaware Rampaging: In SMG4: Super Challenge 64, Mario had a challenge where he had to walk backward for 24 hours. While he did the challenge though, he unknowingly destroyed everything in sight and endangered people, which led to the police assuming him insane and trying to arrest him. In the end, the entire military is called to kill him, and they end up nuking Mushroom City.
Illegal Smuggling: In SMG4: Mario's Illegal Operation, Mario, along with Fishy Boopkins, became the newest member of the Anime Cartel, a criminal organization that smuggles anime into the Mushroom Kingdom after its banning. After Peach lifted the ban, Mario's charges were probably dropped.
Speeding and Resisting Arrest: In Mario Simulator Interactive, Mario can choose to ride a kart in order to catch up to Bowser, but ends up going so fast that a cop pulled him over and prepared to arrest him. The player then can choose to have him continue driving, but if he/she ends up making him stop, the cop will arrest him.
Threatening: On some occasions, Mario threatens to hurt people if they don't do what he says. The most infamous case was in Super Mario 64 Bloopers: Youtube Mario? where he threatened to murder SMG4's family if the latter did not give him a shout-out on YouTube. The most recent example was in SMG4: Mario Waits in Line For Some Spaghetti where he threatened to blow up the Slowpoke in charge of bank withdrawal if the latter did not give him his spaghetti (the Slowpoke initially refused to give it when Mario gave him a fake card).
Trespassing: In SMG4: Mario's Dangerous Delivery and SMG4: Mario School Club, Mario trespassed into a police station and a school respectively, to do a specific action (in the former, he attempted to break Frankie out of jail due to Frankie being accused of orchestrating a car crash, and in the latter, he and the gang attempted different clubs).
Mario has done some villainous acts that affect one or more of the everybody, including SMG4, mostly due to his stupidity and sometimes his malicious desire. This is a list of bloopers where he plays an antagonistic role:
In R64: Mario for Hire., Mario was uncontrollably flying down the track when he accidentally hit a Guy who was warning Little Billy (Baby Mario) to not play in the street because it was dangerous. He also swerved and hit the old lady anyway. Then he crashed into Bowser's car and pinned the blame on Luigi. Later at night, Mario tried to hijack the car but was caught by a policeman. As he entered the mall, he humped the kart and later didn't have any money to pay for the kart. Later that day, Mario set up a stand that sold genuine princess-worn clothes but got caught by Peach Toadstool. Mario then unclogged his toilet using a Bob-omb, causing the bomb to explodes, sending the trainer hurdling off the toilet. During his job at a cafe, he humped Samus for some money, but got caught. Later when he worked at a business, he stole Heavy Weapons Guy's sandwich and pinned the blame on Luigi again. During jail time, he sold Toad to a carnival and got his money. In the end, Luigi pinned the blame on Mario as an act of revenge.
In SM64: Meet the Luigi, he mercilessly chased Luigi for saying his name. During Mario's interview about Luigi, he proclaimed Luigi's orientation was all there was to him. Mario was still unsympathetic towards Luigi, as the latter was being creepy a lot, as Mario might have attested. Mario then tried promoting Luigi's reliability only to get interrupted By Professor E. Gadd, who went on blabbing about Luigi's nose getting stuck in the Poltergust. Mario then whacked the Professor away.
In R64: Revenge of Freddy's Spaghettria, Mario took Luigi to Freddy Fazbear's Pizza with him as a sacrifice, against his will. Luigi wanted no part of this but Mario revealed that he completely chained up his door, preventing him from escaping, much to his dismay. When they were at the Spaghetteria, Mario got a Bonnie Head and used it to scare Luigi for no reason. When Springtrap tried to catch Mario and Luigi, Mario tripped while Luigi left him behind, causing him to get caught by Springtrap. As Animatronic Mario, he tried to kill Luigi but was stopped by him after he managed to break down the spaghetti.exe program that Purple Man programmed into him.
In R64: The Spaghettipocalypse, Mario created bankruptcy of all the spaghetti factory in the Mushroom Kingdom since he did not pay at all prior to the blooper. One week later, Mario threw a temper tantrum after he ran out of Spaghetti because of the previous event and blamed it on Luigi for what happened, which caused him to call the police to exterminate him. Later, Mario went on a rampage throughout the Mushroom Kingdom until he got to Professor E. Gadd's lab to terrorize Toadsworth, Luigi, and E. Gadd. After he got hit by Toadsworth with his crowbar, he poured the bottle of magic stuff into the last bit of his spaghetti, causing the spaghetti to grow into a Flying Spaghetti Monster. When the monster started to attack the Mushroom Kingdom, he didn't care if the monster was attacking the city and started eating the spaghetti. When Luigi thought about Mario ruling the world, Mario became a tyrant and summoned more spaghetti. After Luigi landed on the monster, he gave Mario a Star to get him to eat the monster rapidly, ending the disaster.
In R64: We're going on a Luigi hunt, Mario tried to hunt for Luigi after he ran over his "girlfriend", Spaghetti, so he decided to get revenge on him by taking away his money, even though Luigi don't have money yet. After Mario kidnapped Luigi, he tortured him by using a foul-mouthed parrot and and a pole-dancing chicken instead of killing him. However, SMG4 brought a new spaghetti for him to stop him from tormenting Luigi.
In R64: Mario The Waiter, Mario stole a portion of food from Wario and pinned the blame on Luigi, which caused Gabe Newell to get Mario to fill in for him. First, he was being rude to Frankie. Second, he put a fake cutout form of him and placed it next to Big Smoke. Third, he destroyed the kitchen. Fourth, he served Squidward to Toad and Toadette. Then finally, he served Heavy Weapons Guy a vegan sandwich, which caused chaos in the restaurant. When he threatened Mario to bring the Spaghetti to SMG4, he ate the food and knocked SMG4 over, causing Gabe to chase him. After the restaurant was destroyed, Gabe sent Mario and Luigi to the poster of his face.
In SMG4: Mario's Fancy Dinner, Mario arrived at the restaurant and wanted to order some spaghetti, but Jeeves tried to get rid of him and Mario refused. This caused Jeeves to chase Mario until he spilled the wine on Jeeves' waiter uniform. After he was appointed by Jeeves as his temporary replacement, Mario ruined the dinner between Donkey Kong and Pauline, but Jeeves did his best to save the date.
In SMG4: Mario's Big Chungus Hunt, Mario hunt down the Big Chungus for stealing his Spaghetti. After he was confronted by the other Chunguses, Judge Chungus sentenced him by getting Grand Chungus to execute him. Meggy then saves Mario by betting him to let Mario made a game about Chunguses. Mario destroyed the Nintendo, Microsoft, and finally Sony HQ to make all of the Chungus game. At the end, he got fired after he helped all of the Chunguses for his crimes.
In SMG4: Mario Gets Stuck On An Island, Mario was harassing the pilot of the Ryanair flight he was on that he was hungry, but the pilot did not care at all. Angry, the plumber proceeded to throw him out the cockpit window and walked away as the plane crashed, presumably killing all the passengers. In the end, Mario asked the pilot when was the next meal, but the pilot told him instead to shut up, and thus, Mario got angry and ended up repeating the loop by throwing away the pilot offscreen.
Powers and Abilities
Like his mainstream counterpart, Mario has a multitude of strengths and powers.
Although Mario's abilities and physical ability, throughout SMG4's episodes, greatly vary and are inconsistent, this is a list of capabilities he has shown.
Superhuman strength: Mario has been strong enough to punch and throw people from several feet away to miles away in the sky. This also includes striking people through doors, concrete walls, or other sorts of barriers or objects. He once used a single punch to break through a large window aligned with armored glass. He is able to casually lift & throw Bowser, who weighs over 1.428 tons. He casually uprooted the tree Meggy was building a treehouse on in SMG4: There's Something Up With Meggy... He also punched a pilot straight through the window and down to the ground in Super Happy Magical Fun Fun Island, and is even able to lift King Bob-omb (calculated to weigh 30 tons). He can also rip out a control panel of a train and even throw a weight-lift into the sky, taking out a commercial passenger-jet. After launching Fishy Boopkins in the sky, he ended up making a plane crash into E. Gadd's workshop. He's also supposed to have the same strength as his video game counterpart, who can lift and punt entire castles that weights at least 60 Million Tons, break thousands of bricks with his bare hands, throw a baseball so fast it ignites the air and breaking asteroids easily.
Superhuman Speed: Mario was able to outrun many police cruisers in a high-speed chase running backward in SMG4: Super Challenge 64.
Pyrokinesis: Much like his own games, he has shown the ability to manipulate fire.
Anaerobic Functioning: Mario is often seen in space or underwater without showing signs of needing oxygen. This trait is often shared with the older, retarded SMG4 characters. (While others can't.)
Hand-to-hand skill: Although most of the time he is depicted as a coward, there are times he has displayed his true skill has proven himself to be a master at unarmed combat. Over the years he has been in many battles, winning most of them. He has his own unique style, with very fast and powerful punches and kicks and tackles. One of the best examples of this is his final fight with SMG4 at the end of Mario Battle Royale.
Agility: Despite his weight and shape, he has a great acrobatic capability. He also can greatly apply this to combat, as he can be very skillful when it comes to rapid, high jumps, flips, and tackles. A great example of this was the time he got locked into combat withSans.
Giant-Size and Strength: In Ssenmodnar 10, Mario used a Mega Mushroom to grow into Mega Mario, a power-up form who is bigger, stronger and tougher than the base Mario.
Below-Zero Temperature Tolerance: In SnowTrapped, in some clips, Mario is seen naked in the freezing cold a few times, without any adverse effects. He is also occasionally seen in space, which has a temperature of -454.81, dressed casually in no protective garments and still is not bothered by it.
Bilingualism: Mario is shown to be bilingual, speaking in fluent English and Italian (his mother tongue). His skill is displayed in SMG4: High School Mario, where he and Luigi were given an A+ grade by their Italian teacher.
Rapping Skills: In the War of the Fat Italians series since 2015, as well as Supah Star Rap Battles of Epicness, Mario has demonstrated great rapping skills.
H4ck1ng Sk1llz: Despite normally being unintelligent, Mario was shown to be perfectly capable of hacking into computers in MarioTube 2. However, he needed to break into YouTube™ Headquarters in order to do so.
Head Removal: Thanks to the humorous Laws of Cartoon Physics, Mario will sometimes lose his head and be totally fine in the next scene. On rare occasions, his body can function without his head attached. In SMG4: Mario and the Anime Challenge, Mario can be seen attempting to reattach it after it came off, possibly implying that his head is detachable like a LEGO® Minifigure.
Dancing Moves: Mario is known to be skilled at dancing as shown in Stupid Mario Party as he can perform continuously at quickened pace that Luigi, Peach, and Yoshi are unable to memorize his movements and catch up with him.
Fat Powers: In SMG4: Mario And The T-Pose Virus, Mario could make himself even fatter at will. This made him even stronger, allowing him to break down doors and other furniture.
Nude Bomb: In SMG4: Mario Gets Stuck On An Island, Mario was able to gather the nudes from not just himself but from "all the hoes and the bitches" into a Spirit Bomb type ball that was powerful enough to turn a pig to ashes.
Capturing: Using Cappy, Mario can take control of other people, enemies or inanimate objects.
Drawing the Master Sword: Despite his negative traits and not proving his power, wisdom, and courage, Mario in If Mario was in... Legend Of Zelda: Ocarina Of Time proved worthy of drawing the Master Sword from its pedestal. This impressive feat, however, might be just attributed to his already absurd superhuman strength.
Of course, Mario has weaknesses (though comparatively few compared with many characters):
Slow speed: Due to his high weight (at least 12,000 pounds which equal 7 tons), he is slow on his feet, as shown in 101 Ways for Mario to Die, The 1337 Police, and several other bloopers, though this isn't much of a flaw. However, he was recently shown to have superhuman speed.
Lack of common sense: Mario is one of the most stupid characters (if not the most stupid character) in the series, not even knowing what 1+1 is until Baldi taught him math. It is so far his biggest weakness, as it cost him quite a few battles, despite his strength. However, Mario sometimes does shows signs of intelligence in some episodes, with the biggest example being The Super Mario Stupid Show, which brings up the question if Mario pretends to be stupid and/or has an intelligent side.
Numbness: Exclusive to Super Mario RUN RUN RUN!. This numbness causes him to not feel his legs. Worn off when he managed to reverse the spell Kamek used on him.
Poor Cooking: Mario has downright awful cooking skills, and whenever he turned an oven on, the oven would destroy the castle. In SMG4: Mario's Hell Kitchen, SMG4 didn't allow him to help because of it, and called him useless. Sometimes the occurrence of him failing to use an oven or machines is attributed to bad luck.
Lack of usage of Abilities: Despite Mario having insane abilities, like his ridiculous level of strength, he seems to never actually use it when circumstances require it, such as facing enemies/foes or getting out of a certain situation. This can be tied to his Lack of common sense.
Although Mario is often depicted as a normal human being, unlike higher-level entities such as Waluigi in his Rejection Form, Master Hand, Ztar, or even an actual God, the God of the Teletubby World, there are rare instances where he has displayed such capabilities that temporarily put him in the same level of ascendancy with them all:
God-Like Strength: In Super Challenge 64, once his path of backward sprinting started, he could not be stopped. He rammed & destroyed oncoming vehicles, went straight through concrete walls, heavily destroying small buildings, and greatest of all, he trampled Son Goku from Dragon Ball and the Legend Himself Ultra Instinct Shaggy Rogers from the meme of the same name, all without taking little to no notice. He once defeated the Mario Head with a single jumping upwards fist strike, sending it into the clouds. (The Mario Head once destroyed the Earth by crashing into it.)
God-Like Speed: While in the state of Super Saiyan, Mario is able to fly at incomprehensible speeds. In R64: Mario Simulator, he was able to fly from the Earth to the Sun in ~3 seconds. This means he clocked in the speed of around 111,552,000,000 mph (30,986,667 mi/second), approximately 170 times the speed of light. (The calculation of exact speed is an observation and should not be considered official by any means.)
God-Like Endurance: Mario has displayed many traits of great physical endurance, but in rare instances, he endures things that would be absolutely impossible to survive without the aid of an invincibility star. In SMG4: Super Challenge 64 Mario is seemingly unhurt, and even unbothered after The Mushroom Kingdom Army/National Guard dropped a nuclear weapon right on top of him from a Stealth Bomber. He didn't seem to take notice that he was hit by a nuke point-blank, neither the destruction of the city around him after it; he was too busy celebrating winning a bet made by Meggy (He was challenged to run backward for a whole day). He has survived shots from miniguns, AK-47s, and .50 caliber sniper rifles with no visible injuries.
Super Saiyan Form: This is a very powerful form that Mario has achieved on occasions (ironically not in desperate situations). In R64: Mario Simulator, the simulator game based on him put him in one of the biggest states of rage he's ever been in, making him go Super Saiyan. In the events of SMG4: War Of The Fat Italians 2019, during an arm-wrestling challenge with SMG4, he would turn into a Super Saiyan 3, further enhancing his physical strength.
The reason Luke Lerdwichagul made Mario a mentally retarded character like Homer Simpson from The Simpsons or Peter Griffin from Family Guy was that he felt that using a "normal" or "heroic" personality would be boring. Incidentally, SMG4, his author avatar, has that personality.
Mario is a tiny bit transparent when the SM64 model is used, this can be found in Mario the Waiter after Luigi goes to cook Mario's burrito with spaghetti in it, with the Pyro from TF2 being slightly distinguishable.
According to The (TOTALLY ACCURATE) Documentary of Mario, Mario was apparently born in 1928. Though this might be a joke/oversight (since if Mario really was born at that time, he would be 92 years old), it might be a reference to how some fans theorize that Mario is older than how he looks like, or if he ages slower than normal human beings, despite official (non-SMG4) material stating he is 24 years old.