Monotaro

Monotaro's appearance is similar to that of his father, Monokuma, but the part that is black on Monokuma is red on him. Likewise, his left eye is black, contrasting Monokuma's. Occasionally, a small red glow appears on the eye. He also has bright pink cheeks.

He also possesses a long grey scarf with a silver star pinned to it and a yellow pacifier.

He owns multiple throwing stars of different shapes.

Monotaro is the leader figure of the Monokubs, a group of child-like robots. As a leader, he tries to unite the group members' discordant voices into one. However, being a scatterbrain, he gets sidetracked a lot and often struggles to keep his rambunctious siblings focused on the task at hand. He is also mentioned to have a clumsy side, giving him a childlike charm and he often acts the most child-like and "pure" out of the siblings. Despite not being a very competent leader nor the smartest, his siblings consider him a reliable figure.

Compared to Monokid and Monosuke, Monotaro is relatively mild-mannered and less openly hostile towards the students, though like all the Kubs he calls the students "you bastards" seemingly as an attempt to imitate his father. He also seems considerate of Monophanie and overall appreciates all the members of the group. Nevertheless, he is evil, just like all the siblings. He occasionally bullies his siblings and fights with them, just like all the Monokubs do. When his father supposedly died, he grieved and cried, but also disturbingly suggested that they should cook his remains. However, when his siblings get executed, he does get quite shocked and occasionally even pukes just like Monophanie.

While Monotaro has always been a bit forgetful, his memory issues become notable in Chapter 3 and turn even worse in Chapter 4. He forgets who Monophanie is and forgets even who he is, being unable to do his usual job without Monophanie's guidance. He is often confused about where he is and what is happening. Because of this, he makes amusing assumptions, like K1-B0 and Miu being his parents. He also begins to think that Monophanie is his wife and acts very romantic towards her. However, because of his memory issues, he is also seen to act abusive and aggressive towards her.

After Miu was murdered, Monotaro mourned her death deeply and even became an ally for the other students in order to avenge her death. After he regained his memories thanks to Monophanie, he once again turned evil and remembered he was on his father's side, which made some of the students sad because they had begun to consider him their friend.

Monotaro seems to become much more aggressive after he is revived, as he is the one leading the fight against K1-B0 to prevent the destruction of the Academy. He mentions that he must destroy rule breakers, because they make his father angry and he does not like it when he is angry, indicating that he is motivated by his fear of Monokuma. When his father threatens to blow him up if he and his siblings don't make good arguments, Monotaro and Monophanie eventually end up as the last ones left and they are scared and cry, not knowing what else to do, and beg Shuichi to let them win so they could live. Nevertheless, they both end up destroyed.

Controlling the Exisals

Monotaro, along with the other Monokubs, are the only ones who can control the Exisals.

Monotaro can control the Exisals to manipulate the students, since the Exisals carry dangerous weapons such as a saw and a gun. He also uses the Exisals to punish any students who break the school's rules.

In Chapter 3, Monotaro and the other remaining siblings were able to force Monokuma to surrender the power to control the Academy, as Monokuma can't stop them if they are using the Exisals.

One of the reasons he was broke back was especially because of him and his siblings being the only ones with the ability to control the Exisals. Monotaro's ability of use the Exisals was demonstrated more clearly in Chapter 6 when he and K1-B0 were having an intense fight.

Hacking

In Chapter 4, Monotaro forgets that he is bad with computers and becomes very skilled at hacking. He is able to examine the Neo World Program and finds important pieces of evidence for the Fourth Trial.

Fixing and rebuilding

Monotaro and his siblings seem to be able to repair machines as they are the ones who fix K1-B0's antenna and they are also able to remove gear and heavy weapons from his body.

Creation

Monotaro, along with his four other siblings were created by Team Danganronpa, a group of people who created the famous reality show called Danganronpa, a series which tells the story of Killing Games. Monotaro and the Monokubs' roles are to aid Monokuma in hosting the Killing Game. The Monokubs probably have used the Exisals ever since their debut in Danganronpa to punish the students who break rules.

It is unknown when they were created and in which Killing Game they started to appear. Their notable appearance is the last Killing Game entry, the 53rd season of the show.

After the students woke up and left the classroom, the Monokubs began to drag every student to the gymnasium. After every student entered the gym, the Monokubs entered the gymnasium with their Exisals and they appeared before all the students by jumping from their Exisals, showing their robotic bodies that has a shape similar to a bear. Although this seems strange to the students and raises many questions, Monotaro and the others concentrate on incoherent things until at last, they realize that the students did not possess the appropriate clothes to be "Ultimate Students", for which they give them new clothes. Realizing that Monophanie did not fulfill her task, the Monokubs are forced to stop the beginning of the mutual killing game and wait another time, restarting everything and returning some memories to all the students.

It was revealed that this event happened right before the 53rd Killing Game occurred, when the students' memories were about to be fabricated by Team Danganronpa.

Later when the students woke up again. The Monokubs appeared in the classroom to introduce themselves yet again to the students. However, the students do not recognize the Monokubs since they were brainwashed into their new selves. The Monokubs told the students to explore around the Academy and introduce themselves to the other Ultimate students.

Monokuma's entrance

After the students finished introducing themselves to each other, Monotaro and the Monokubs made an announcement to meet later in the gym again to tell them about the Killing School Semester, Monotaro and his siblings work alongside their father, Monokuma, to control the Ultimate Academy for Gifted Juveniles' killing game. After the students arrived to the gymnasium yet again, the Monokubs appear in their Exisals, this is what caused to the students to be panic. However, Rantaro Amami went to confront the Monokubs to ask them what they exactly want with them. The Monokubs ready to announce, the Monokubs ended up getting into a fight with Monotaro and the rest with their Exisals. However, Monokuma was heard from the backstage trying to calm down his “cute cubs”. This is what caused Monotaro and the Monokubs to leave the Exisals and greet his father with joy.

When Monokuma made his debut, he introduced himself to the students as the Headmaster of the Ultimate Academy for Gifted Juveniles with the Monokubs very happy to see their father again. Monokuma compliments his “cute cubs” because of his handsome look. However Monotaro and the Monokubs made Monokuma angry and punched his students due to them getting on his nerve. Afterwards, the Monokubs explained the rules of their new lives in the Ultimate Academy for Gifted Juveniles Killing Game to the students. When Monokuma officially started the killing game, the Monokubs laughed to the students as the game had officially began.

Hosting the Killing School Semester

After Monokuma and the Monokubs officially started the Killing Game, the students went in search of an exit, the students ended up finding the Death Road of Despair, however, the students failed to escape, which made Monotaro to appear with his siblings to mock them about their hopes of getting out of the Academy.

Monotaro along with his siblings were shown in the monitors of the Academy to announce the day time and nighttime and other events about the killing game.

The next morning, Kaito Momota was about to attack Monokuma, this caused the Monokubs to appear to punish him, that was until Monotaro accidentally squished Monokuma with his Exisal, which resulting in his explosion. Monotaro was the first one who began to cry for his father, later followed by his siblings, thinking he is truly gone. The Monokubs then took the place of the Headmasters of the Ultimate Academy for his father. The Monokubs then left to commemorate their father's demise.

Later the next day, Monokuma reappeared and made the Monokubs happy to see that their father is still alive. Monotaro was seen with the rest of the Monokubs announcing to the students nighttime from the back, with his sibling Monokid eating honey as he gets drunk.

Before the deadline of the motive from Monokuma, Monotaro along with his siblings were preparing a special meal from the menu for Korekiyo Shinguji, the name of the dish was "Pasta that tastes like a lonely old lady eating her grandkid's birthday cake ".

First Investigation and Class Trial

After the deadline, Monotaro appeared once again along with the other Monokubs when Rantaro Amami was found dead. He and the other Monokubs grabbed the cameras found in the crime scene in order to help the students investigate the crime scene with more details.

Later Monotaro and the other Monokubs announced to the students to head to the warehouse as they already finished printing the photos. After Kaede Akamatsu and Shuichi Saihara arrived, the Monokubs showed up and gave to the students the printed pictures found at the crime scene.

Monotaro and the others appear again during the first Class Trial, in which when Kaede is voted as the culprit, some of her friends try to stop her from being executed, but nevertheless, the Monokubs threaten them with their Exisals so that they couldn't intervene with Kaede's execution, Kaede stopped them from getting into a fight, saying that she prepared herself for her upcoming death.

During her execution, Monotaro along with the other Monokubs helped Monokuma to orchestrate the execution by pulling the rope tied to Kaede's neck until she died from Asphyxia. At the end of the execution, Monodam killed Monokid by pushing him inside the slam-shutting piano's cover spikes.

Monotaro, Monophanie, and Monosuke are all shocked and confused as to why Monokid was executed as well, where-as Monokuma simply brushes it off and stated that he at least has four more kids. After Monokuma left, the remaining Monokubs questioned Monodam, but he simply states that it was "For their own good" before leaving as well.

Monotaro and Monophanie were both still bewildered, but Monosuke didn't think much of it and simply states that Monodam killed Monokid because he was bullying him. After this, the remaining Monokubs left the Class Trial room as well.

Presenting the new prizes

The next morning, Monokuma decided to give to the students prizes due to them surviving the Class Trial as their new rewards. Monotaro and the Monokubs appear in the cafeteria quiet due to them having a bad time yesterday due to Monokid dying. Himiko thinks that they're being bullied, due to her past experiences, startling them. However, Monokuma notes that they were being way too quiet, but he does not care due to their cuteness. Monodam claimed that they were just getting along as the rest of the Monokubs agree with him. Monotaro and the other Monokubs get straight into the point and present to the students who survived the Class Trial the prizes. The Monokubs claim that they are nonsensical prizes and don’t even know what they are for. After Monokuma left, the Monokubs stayed behind. Monosuke started a fight with Monodam due to him killing Monokid, however, Monotaro and Monophanie calmed them down having no reason to fight.

During the students’ investigation, the students came across the Pool which the students found dangerous. The Monokubs appear and tell the students that it was just an ordinary pool that the students could use to have fun. They also explain the rules of the pool in which Monophanie comments that its prohibited to swim at nighttime which lead Monotaro to add a new school regulation to the Monopad.

During the night, the Monokubs prepared the second motive, distributing various motive videos at random while the students slept in the dorm rooms. The Monokubs unaware of them giving out the Kubs Pad at random. The next morning, the Monokubs announce to the students the present they left in their dorms during the nighttime.

With Kirumi Tojo being executed, Monosuke also ended up being murdered by Monodam due to him being very mean to Monodam during Chapter 2, which made Monotaro and Monophanie shocked and scared of Monodam.

Monodam turns against Monokuma, accusing him of treating his children like slaves. Since the Monokubs have Exisals on their side, Monokuma is forced to surrender. Monokuma seems to be happy about the Monokubs. He then decides to take a vacation and leave the Academy to his children and have a part-timer take his place temporarily. Monotaro once again appears in the computer room along with Monophanie and Monodam where they presented to Shuichi the new computer that could create a completely "new world" with this technology. The Monokubs also gave Shuichi a Flashback Light with a new memory.

Monotaro and the other Monokubs appeared in the cafeteria with the students to give them a Flashback Light to prepare their no plan. However, Angie grabbed the Flashback Light and destroyed it right in front of the Monokubs. The Monokubs were shocked because their plan failed since Angie net far to break a Flashback Light. Monotaro began to question Monodam about the situation, but doesn't have anything to say and left the cafeteria. All confused, Monotaro didn't know what to do and left as well along with Monophanie.

Due to the previous Flashback motive failing, Monodam prepared another motive for the Monokubs. Monotaro and Monophanie presented a new Motive to the students after Monokuma went on his vacation from the Ultimate Academy, where they told the students that they could resurrect one of their dead classmates as a "transfer student" and participate in the Killing School Semester once again.

Monotaro later appeared when Angie's body was found in her Research Lab. There, Monotaro and the other Monokubs gave to the students the Monokuma File. Later during the investigation when Tenko's body was found the Monokubs where shocked to see two murders during the investigation for the Class Trial. Since the Monokubs didn't know what to do in that situation, they called their father for help. After their father, Monokuma appeared he began to lick them for their cuteness. Monokuma explained how this situation worked and later left the crime scene.

After the investigation, all of the three Monokubs were present on the Class trial with their father. During the end of Chapter 3, Monotaro and Monophanie assisted his father, Monokuma to execute Korekiyo Shinguji. During the execution, Monodam committed suicide by rushing past Monotaro and Monophanie and into the flame that was boiling Korekiyo alive, causing it to burn even more.

Monotaro began to forget a lot of things during Chapter 3 and was confused about a lot of his identity and other things, even forgetting who Monodam is.

Monotaro had a major memory loss where he became more and more confused about his identity. He came to believe that he was the drunken husband of Monophanie and thinking that Miu Iruma and K1-B0 were his parents, a role that Miu happily took up while K1-B0 didn't. Monotaro then began to act romantic towards Monophanie, saying he had never thought of her that way before. However, the next morning, Monotaro is seen acting completely different, kicking a crying Monophanie and demanding her to give him money like an abusive husband, seemingly due to his memory issues. Because of this, Monophanie hides, causing Monotaro to panic since he can't remember anything. However, Monophanie feels bad for him and later takes him back, and he apologises as the two of them cry. The announcement then ends with "the end", as if it were all theatre.

The remaining Monokubs later appear when Miu was found dead. Monotaro was very upset to see her adoptive "mother" was murdered, Monotaro ended up assisting the students in solving the murder to avenge his dead mother by hacking into the Neo World Program via the main computer inside the Computer Room in order to give Shuichi and the other students important pieces of evidence for the fourth trial.

As the fourth trial started, Monotaro regains some of his memories back, but still calls Miu his "mommy" and at times, From his constant memorry losses, he has on and off headaches. Right before Gonta's execution, Monophanie began to have stomach pains. Monotaro thought they were going to have a baby. Monotaro and Monophanie were involved in Gonta Gokuhara's execution. Monophanie was unknowingly carrying a robotic growing wasp inside her belly, and later she was killed after she gave "birth" to the insect when it exploded through her stomach and then proceeded to slice Monotaro in half. This was all a ploy by Monokuma as the cubs were boring him and that “Bad things always happen to children whose parents don’t care about them.” K1-B0 was noticeably horrified by their fates, upset at Monokuma for doing such a thing to them.

That same night, Monokuma started to mourn for his “Cute Monokubs” at their funeral. However, Monokuma started to question himself why they even existed in the first place.

Monotaro was mentioned when Monokuma first showed the students where the Monokubs store the Exisals Units. Since Monotaro and his other siblings were dead, Monokuma gave to the students this room since no one can use the Exisals but the Monokubs.

After finding out the truth culprit in Kokichi Oma’s Class Trial, Kaito Momota, Maki was ready to fight Monokuma to stop him from executing Kaito. However, Monokuma reveals that Monotaro and his brother were rebuilt to protect Monokuma with their Exisals from the students. Monokuma stated that the factory that built the Monokubs were still in function and brought the latest models of them. Monotaro and the other Monokubs don't know what has happened around in the killing game and are confused in a way.

After the Class Trial K1-B0 began a war with Monokuma by destroying the Ultimate Academy. This is what caused Monokuma to appear angry at K1-B0 and summoned the Monokubs riding the Exisals to him. The Monokubs threaten to destroy K1-B0 for damaging the school and ending the Killing Game. K1-B0 reassures everyone to find the truth while he engages the Monokubs in combat, fighting them the entire time everyone else is investigating the real truth about the Killing Game. While all the Monokubs where inside the Academy with The Exisals searching for the students, Monotaro was the Monokub in charge of fighting K1-B0 as both of them were seen fighting outside of the Academy.

During the investigation of the students to uncover the truth of the Academy, Monotaro showed up in the library with his Exisal and attempted to stop their investigation, but K1-B0 immediately rushed to his friends’ rescue, knocking the Exisal to the side and binding it in the rubble to keep it from moving for a while. When Shuichi, Himiko, Tsumugi and Maki left the hidden door, they encountered K1-B0 and Monotaro with his Exisal. During the fight between the two, they caused Himiko to be trapped in the hidden door.

After finding the entire truth, Shuichi headed out to the courtyard to stop K1-B0's and Monokuma's fighting, telling both groups that they were going to hold a Class Trial. Monokuma agreed to Shuichi's terms but only on the condition that they would be responsible for this Class Trial if it ended up being disappointing. K1-B0 however, was told by Monokuma that he had to take off his armaments before being allowed into the trial grounds. While K1-B0 was reluctant to do so, Shuichi reassured him that he was indeed trying to end the Killing Game. Hearing this, K1-B0 headed to his lab with the Monokubs to remove his equipment while also having his antenna fixed, allowing him to hear his inner voice once again.

Monotaro and his siblings were once again present in the final Class Trial. However, Monokuma manipulated the Monokubs to participate as they were necessary to it. If they didn't join in, they would get destroyed one by one before everyone dies at the end. The Monokubs are much more invested in the discussion this time than how he was in any prior trial, actively trying to refute evidence that the survivors presented. Monotaro without knowing much didn’t have much to say and begged the students to help him and let him win to survive. While the other Monokubs were already getting destroyed, Monotaro and Monophanie were the only Monokubs left in the courtroom. Monotaro was the last one along with Monophanie to explode among the other Monokubs.