List of implied species

A list of implied species that have not physically appeared in any form of media up to this point in time. Regardless of their lack of appearances, the implied species have been mentioned at least once throughout the Super Mario series.

Burping Beetle
Burping Beetle is a type of insect briefly mentioned by Grubba while Mario was snooping around Glitz Pit during the events of Paper Mario: The Thousand-Year Door. Apparently these creatures are common in the Glitz Pit as Grubba does not seem worried about them. As indicated by the name, they make a sound that resembles burping. They are only mentioned if the player, in order to cover Mario's tracks, selected "BRAAAP!".

Business Bro
Business Bros. are a type of Hammer Bro whose existence is only implied in Paper Mario: The Thousand-Year Door. The only known Business Bro is Hamma Jamma's father, although there are very likely several more.

Business Bros. seem to be the Hammer Bro answer to the businessman. Therefore, it is assumed that Business Bros. lead a more laid back, controlled, and much less violent life in comparison to normal Hammer Bros. Also, as Hamma Jamma once told Mario, dropping out of Hammer Bros. school to go to Business Bros. school (as his father did) is a responsible (yet, according to him, lame) act.

Luff
The Luffs once made up a great kingdom. Their tale is told in Paper Mario: The Thousand-Year Door, and, although they are never seen, they are integral to the deeper parts of Luigi's Paper Mario: The Thousand-Year Door adventure.

The Luffs were responsible for the forging of the Marvelous Compass, and they used its powers to take over the majority of the world. However, since the Luffs misused it, the compass cursed them, destroying their empire. Hoping that this would not happen to other kingdoms, a Luff boy named Cranberry broke the Marvelous Compass into seven parts, hiding six and keeping one with him in Rapturous Ruins. After a thousand years of sleep, Cranberry would become the last of the Luffs, and even he disappeared when awoken by Luigi, who intended to rebuild the Marvelous Compass.

The Luffs' part in Luigi's story was not yet over, however. After making it to Hatesong Tower, Luigi would soon hear the true intention of Minister Crepe: He had apparently always been planning to usurp the Marvelous Compass from Luigi's hands and reestablish the Luff Kingdom as his own. Luigi would not comply, and Crepe was soon defeated. The Luffian part in Mario had ended.

RecordoMeow
The RecordoMeows are implied creatures seemingly found in Fort Francis. They are only mentioned in Chapters 3-1 and 3-4 of Super Paper Mario; they are presumed to be PatrolMeow-style kitten robots that are known to record Francis' beloved television programs.

Sea turtles
Sea turtles were mentioned in the Super Mario Bros. film when Luigi was driving with Mario to a plumbing job. When Luigi made a right turn instead of a left based on his feelings, much to Mario's annoyance, he justified his decision by saying he had read that seas turtles navigate thousands of miles on instinct. Mario retorted that they did not do that in Brooklyn traffic.

Soybean Civilization
The Soybean Civilization, whose people have also been collectively referred to as the "Soybeans", was an ancient civilization that once inhabited the Beanbean Kingdom. Most of the Soybeans' past (and even their existence, which is only verified by the Beanstones and other remnants) is an enigma, and they were only hinted at in Mario & Luigi: Superstar Saga. Even hearing about the Soybean Civilization is completely optional for the Mario Bros., but they can do so by talking to Fava's brother (who describes himself as a great intellect) in Beanbean Castle Town, unless the town is under attack by Cackletta. If they do so, he will inform them that he is currently most interested in studying the Soybean Civilization and will ask Mario and Luigi if they wish to hear a report on it. If they answer "Yes", then he will begin speaking of the civilization, revealing much about it.

Apparently, the Soybean Civilization coexisted with (or possibly included) at least three Beanish subspecies: spin-beans (who had the ability of flight, likely a reference to the Spin Jump), mole-beans (who, like any other type of mole, could dig through the ground), and dash-beans (who could move at super speeds, hence their name). According to the intellect, the Soybeans may have also very well lived in the Beanbean Kingdom (or maybe even Beanbean Castle Town itself), although the only possible proof of this would be the location of the ten Beanstones, the civilization's buried treasures, in the town. The Mario Brothers could then accept the man's challenge of locating these underground gems, and he would finally reveal that the Soybeans were extremely short; as such, only Mario's crushed form could find the otherwise invisible Beanstones. (When the small Mario stood on one of the invisible pits in which the gems were placed, an exclamation point would appear above his head and, if Mario & Luigi: Superstar Saga was being played on a Game Boy Player, the GameCube controller would rumble.)

Afterwards, a Little Fungitown NPC would state that the lift platform from Teehee Valley to Little Fungitown was built by the people of the Soybean Civilization; the design of this platform (which sported many fancy Mushrooms) may suggest that the Soybeans had some connection to the Toads. These were the only mentions of the great and ancient civilization and even when Mario and Luigi found the Beanstones and took them to Fava's aforementioned brother (who rewarded them with a Bros. Rock badge), he would only claim that he would announce his hypothesis on the civilization and take no further action in-game. Finally, it may be worth noting that, while references to the Soybean Civilization are rare in Mario & Luigi: Superstar Saga, the invisible pits in which the Beanstones are stored (as well as the strange reactions they trigger in short people) were actually spoken of in one of the many books belonging to a separate character in Beanbean Castle Town.

Trivia

 * The Soybeans' name simply comes from the soybean, a type of legume which is actually classified differently than the standard bean.

Vegebrodies
The Vegebrodies were a species mentioned in Mario & Luigi: Dream Team. Little is known about them, except that they fought Muscle Lord Biceptius for unknown reasons.