Dimentio

"Master of dimensions... Pleaser of crowds... I am... Dimentio!"

- Dimentio

Dimentio is a magical jester and the true main antagonist in Super Paper Mario. His name is a pun on dementia and dimension. Like Mario and Mimi, he can flip between dimensions, but he can also manipulate them (an ability he shares with Merloo) and controls Dimension D, which he designed. Skilled in duplication, teleportation, and invisibility, Dimentio is one of the four main minions of Count Bleck's Army (who serve as major bosses throughout the game), along with O'Chunks, Mimi, and to a lesser degree, Mr. L. While no concrete information has been provided, one of Carson's stories implies that Dimentio is the descendant of the magician who created the Pixls.

History
Not much is known about Dimentio's past other than that he is a freelance mercenary whom Count Bleck hired, probably for his dimensional skills. Dimentio is first shown at a meeting between Count Bleck and his other minions, mildly insulting them until Nastasia mentions the appearance of the possible hero of prophecy (Mario), sparking Dimentio's interest. He decides to go to Yold Desert with O'Chunks to see this hero for himself, though Dimentio doesn't meet him until the end of Chapter 1, when he sabotages Fracktail, the robotic guardian of the second Pure Heart, and has it attack Mario. Despite this being the first encounter between Dimentio and the protagonists, Tippi immediately recognizes him, suggesting she has prior knowledge of him or has met him before. After Fracktail's defeat, Dimentio realizes Mario may be the hero of prophecy and begins a plan known to no one but himself.

Before his return to Bleck's side, Dimentio learns that there are four heroes of prophecy rather than one and concludes that Princess Peach, involved in the creation of the Chaos Heart, will be the second hero and warps her from Castle Bleck (where she is held captive) to Flipside to join Mario. Dimentio likely does the same with Bowser, who wakes up in the Bitlands with several of his minions, although it is never explicitly stated. Eventually, after Mario defeats O'Chunks and Mimi, Dimentio is personally called upon to dispose of Mario and his friends, and he goes forth to instead test their strength in Dimension D. Mario and his friends defeat him, as Dimentio had expected, but believes that the heroes must be stronger when the battle with Bleck arrives.

Upon his return to Castle Bleck, Dimentio next gains knowledge that Luigi is the ideal host for the Chaos Heart's power, and he will use it to spread darkness. After acquiring this knowledge, Dimentio makes use of his ability to turn invisible to spy on Bleck and Nastasia. He learns that Bleck has an emotional side, and this could be used as a weakness to make it easier for the heroes to defeat him. While Luigi is under Nastasia's mind control and turned into "Mr. L," Dimentio keeps careful watch of his skills to see if he is worthy of being the one mentioned in the Dark Prognosticus as Bleck previously stated. Dimentio now is in need of a tool to control Luigi so that he can use him to possess the power of the Chaos Heart. He meets an associate, most likely King Croacus IV, in The Land of the Cragnons and acquires two Floro Sprouts, which are plants that are put on people's heads to be mind controlled.

Dimentio takes the opportunity to once again test Mario and his friends, this time using O'Chunks and, and at the same time, test the Floro Sprouts to make sure they function properly for their future use. O'Chunks is once again sent by Count Bleck to defeat the heroes. He meets them in the Land of the Cragnons, and is about to engage them in another fight when Dimentio interrupts him to test the heroes and the Floro Sprout. First, Dimentio warps O'Chunks to Dimension D to test the heroes. Once they defeat him, a Floro Sprout that Dimentio planted on him puts him under mind control, creating a form of O'Chunks he called "O'Cabbage". Dimentio programs the Floro Sprout to make O'Chunks faster and more unpredictable. O'Chunks is defeated again, and this more than proved to Dimentio that Mario is indeed the chosen one and is almost ready to battle Bleck.

With the Floro Sprouts and a means of manipulating Luigi in his possession, Dimentio next plans to join the fourth hero with the other three. He knows Luigi would be the fourth hero, so he needs to release him from Bleck's control and reunite him with the other heroes. He needs a time and place, however, where this deception wouldn't be discovered. He comes up with the perfect plan to ensure that Luigi would be reunited with the heroes and still keep his plans a secret. He coaxes Bleck's henchmen, Mimi and Mr. L (but not O'Chunks due to his recent failure) by telling them of their rewards they would get from Bleck for defeating the heroes in the next world (just on the edge of destruction). The world, Sammer's Kingdom, is indeed obliterated by the void, but it remains in a withered state. This would be the perfect area to "murder" Mr. L and send him to the Underwhere, a place where those whose games have ended are judged. This would release his mind control and also have him meet up with Mario, as Dimentio planned to send him and the other two heroes to the same place.

The Pure Heart Mario acquired in this land is powerless against the destruction, but it could be repaired in the Underwhere. If Mario would be sent here, he could repair the Pure Heart and meet up with Luigi, killing two birds with one stone for Dimentio. Dimentio "murders" Luigi, and then quickly does the same to Mario, Peach, and Bowser in Merlon's house in Flipside. While it appears that Dimentio ends all their games, he actually uses his magic to temporarily destroy them and send them to the Underwhere, rather than actually ending their games for good. Mario is eventually able to repair the Pure Heart and meet up with Luigi and the other heroes and return from the Underwhere. Dimentio reports to Bleck that his henchman, Mr. L/Luigi, had betrayed them and joined the heroes in order to avoid any suspicions of deception.

As the heroes gather the last Pure Heart, Dimentio begins to put all final preparations in order. Before doing so, he tells Bleck that Tippi had uttered Blumiere, which was Bleck's true name. This proves to Bleck that Timpani, the woman he loved, is truly alive. Dimentio does this to weaken Bleck emotionally and make it all the easier for the heroes to defeat him. During the course of the hero's journey through Castle Bleck, Dimentio creates hundreds of clones and also manipulates the reflection of the castle mirrors to confuse the heroes as he shoots energy spheres at them. In addition, he gives them a chase through all the previous worlds (including the World of Nothing) in a game of "Magic Tag". Dimentio merely feigns his efforts to stop the heroes in order to make sure that his deception is not revealed until the right moment.

When Peach and Bowser are presumed dead in Castle Bleck, Dimentio approaches Mario and Luigi, reveals his intentions and gives the brothers the opportunity of joining him to destroy Bleck. In actuality, Dimentio plans on using two Floro Sprouts to mind control Mario and Luigi if they agree, so that his plans would unfold exactly as planned. While Dimentio explains how he's been "helping" the heroes the whole time, Tippi can still see the insanity behind Dimentio's nature. Mario and Luigi refuse to work with him, which makes Dimentio resort to another alternative. He insults Luigi, who then forces Mario and Tippi to leave so that he can handle Dimentio by himself and prove his strength to the villain.

Luigi fights and beats him, but this is all a ruse to get Luigi in Dimentio's grasp. Dimentio appears to commit a suicide attack, but he is actually planting a Floro Sprout in Luigi's unconsciousness. With this, Dimentio's plans are almost complete and in full fruition; all that is left is Bleck's defeat. Dimentio waits in the shadows during the battle between the four heroes and Bleck, ready to destroy his former master once and for all. Prior to the battle, Nastasia learns of Dimentio's true nature as a violent and psychopathic traitor. She anticipates that Dimentio might trap Count Bleck in Dimension D should he choose not to murder him or fails to do so. She informs Bleck's loyal minions and goes off to save the Count and tell him of the true evil. Bleck, in the meantime, is defeated and the Pure Hearts are used up in the battle, allowing Dimentio to shoot a burst of energy to finish the Count off. Nastasia arrives and steps in front of Bleck to save him, absorbing the shot instead, and seemingly dies. Mocking Nastasia for her sacrifice, Dimentio takes control of Luigi through the Floro Sprout, which reverts him back to Mr. L, and takes control of the Chaos Heart.

He combines Mr. L and the Chaos Heart to form Super Dimentio and sends Bleck, Nastasia, and Tippi to Dimension D to torture and kill them later. He becomes one with his creation and decides to end the lives of the heroes, as he had no further use for them. Transforming the room into his image and claiming Castle Bleck as his own, Dimentio demonstrates incredible new powers that are amplified by the Chaos Heart. Super Dimentio laughs at the heroes' efforts in battle, as he is shown to be invincible. He eventually starts to use his magic to wipe out the heroes and all worlds in one fell swoop. In Dimension D, Bleck loses all hope, as nothing can stop Dimentio without the Pure Hearts. Tippi, O'Chunks, and Mimi, who came to find Bleck, urge him not give up hope. Through Bleck and Tippi's love, the Pure Hearts are regenerated after the battle with him. Tippi is able to escape from Dimension D, thanks to the Pure Hearts' power, and use them to heal Mario and his companions.

With the Pure Hearts' power, Super Dimentio becomes vulnerable, and engages the other three heroes in a final showdown. On the verge of death, Dimentio expresses disbelief at how his plans could fail when he did everything the prophecy required. Tippi and the heroes explain that nothing is decided entirely on fate and it was Dimentio's one mistake to assume that his prophecy was irreversible. Nevertheless, Dimentio smiles and reveals one last trick to ensure everyone in existence will die with him. With his last breath, Dimentio leaves a portion of his power behind to continue controlling the Chaos Heart to wipe out all existence. Uttering one final "Ciao", the last remains of Dimentio explode prodigiously and are utterly obliterated. Before exploding, though, he spits out an unharmed Luigi, but the power of the Chaos Heart continues to destroy all worlds.

Count Bleck, no longer evil, reveals that the only way to destroy the Chaos Heart is through true love. He and Tippi exchange vows at the same altar where the union of Peach and Bowser took place and where the Chaos Heart was created. This new union between Count Bleck and Tippi activates the full potential of the Pure Hearts, which cancels out the energies of the Chaos Heart and Dimentio's remaining power. Unfortunately, this also causes Tippi and Bleck to disappear. Thus, Count Bleck and Tippi sacrifice themselves to save all existence and return all worlds to peace. With the Chaos Heart destroyed, the void closes, Nastasia is revived, and all worlds return to their former states, including the ones that were destroyed by the void. It is assumed Dimentio was completely destroyed and sent to the Underwhere.

Powers and Abilities
Dimentio, being a magician, is capable of many special abilities and powers. Being a master of dimensions, Dimentio is able to flip between them like Mario. Dimentio can also create his own in which he controls, such as Dimension D, and give himself additional power and support.

Dimentio can teleport and shoot energy spheres at his foes. He can also duplicate himself to inflict twice the damage. A method which proves to be the most effective is his magic. He is able to create a compact magic field around his victims in which he simply snaps his fingers, which causes several explosions within the field. Dimentio's 'Warp', used by nearly all the villains at some point, also has its own distinctive appearance and sound. A square expands then contracts on the teleporting object, making it disappear with a sound while a small shock-wave distorts the air around it. Dimentio's lesser abilities, usually used for acquiring information, are hovering and being able to turn invisible.

Personality
Dimentio has a very dark personality and is shown to be a very disturbing and intelligent character. He at first seems to be a very silly and lighthearted villain, but his true nature and intentions are much more sinister. He himself comments on how he is "always deadly serious". While he acts as though he is merely an aid to Count Bleck, his true purpose is to steal the Chaos Heart from Count Bleck to control The Void and destroy all worlds, so he can build perfect new ones of which he is the ruler.

Dimentio is repeatedly referred to as a psychopath by Tippi and has shown traits of this type of characterization. He always bears a smile and a mind filled with insults, unusual similes, and lies to throw at his enemies. The only moment where Dimentio is shown to be shocked is when he is defeated. However, even in this state he regains his smile and reveals that his last act is to kill all living beings.

Despite his apparent insanity, anger and hatred towards certain individuals, Dimentio usually keeps a very calm composure throughout the story. He never shows any signs of being nervous and seems very confident in his abilities and plans. He views his goals in a very different manner than others in the game. Dimentio believes that his intentions and plans are justified and not evil. His understanding of good and evil is what is right for him is good, and what's bad for him is evil. At the same time however, Dimentio is able to see that the heroes believe him to be evil and uses that to further taunt them. The value of a person to Dimentio is measured solely on how useful they can be for him. Throughout the story, he seemed to have a mutual respect for Mario and the others, but then quickly decides to end their games when he felt that they were no longer of any use to him. Dimentio despises his fellow henchmen, especially his master, Count Bleck. Dimentio considers the rest of the minions fools for their loyalty towards the Count, as well as for their own respective weaknesses. Dimentio is shown to be utterly disgusted and resentful of Bleck and his intentions, but he still knows the value of working in his services. This contributes to Dimentio's character as a figure that never overlooks any moments of value and does whatever he needs to, even if it means serving someone he despises.