Junko:

Super High School Level Analytical Prowess

Junko's true talent allows her to quickly analyze her surroundings with near superhuman speed, detailed thinking and memorization. This ability also allows her to learn and understand new skills and talents by just seeing/studying it once, seeing as how she was able to learn all the necessary techniques of how to create a brainwashing video from observing a hacker, learn how to create her own A.I from studying a students work and later figured out and perfected a method to erase someones memory perfectly after stealing a scientists research and possibly obtaining other talents/skills during her time studying in Hope's Peak.

This talent gives her an excellent ability to make very detailed plans in a short amount of time. She is also excellent at reading and thus manipulating others. She can often predict what a person is going to do before they do it - an ability she can use to defeat opponents much stronger than her. It is also this ability that threw her into boredom since she was able to accurately guess how events would play out; this fueled her love of despair as an "unknown".

Ultimate Despair

Junko has the ability to cause nearly anyone to fall into despair, and she revels in the despair felt by herself and others. Using her talent as the Super High School Level Analytical Prowess, she could detect everyone's weaknesses and use this information to manipulate or even exploit people around her to do her bidding.

This was demonstrated by how she could prevent a student (whos dead lol) from committing suicide and persuaded them to join her in spreading despair by killing adults. It's also been shown that she has severely abused her sister and made her very dependent of her. However, it should be noted that she usually takes the more personal approach only with people she is genuinely interested in. She tends to literally brainwash masses, using videos created with the hackers animation brainwashing technique and her own talent of despair.

Ability to sense Talent, Hope and Despair

Similar to Nagito Komaeda, Junko seems to have a strange ability to sense hope and despair in other people, which doesn't seem to be related to her analytical skill.
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Mukuro:

Ultimate Soldier

Mukuro showed a huge interest in the military since childhood. In elementary school, she won a survival game tournament and began writing for military magazines.
She has received military training from a very young age and is highly proficient in both a variety of firearms and hand-to-hand combat. When pushed to the limit she can enter a kind of battle trance, where her speed and reflexes increase to high-superhuman levels.

When she was young she joined the elite mercenary group Fenrir and has never received a single injury on the battlefield.

She managed to hold her own against Peko Pekoyama the Ultimate Swordswoman, while she was able to defeat her, she was unable to defeat her in hand-to-hand combat.

Despite being the Ultimate Soldier, Mukuro has terrible negotiation skills, which she admits.
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Celestia:

Ultimate Gambler

At a young age, she became a gambler and won countless games, even ones at the stake of her own life, but was able to win regardless. She states during a game of King of Liars, she spilled tea on her favorite dress and she had to end the game quickly to take it to the cleaners. She once even managed to accumulate over ten million dollars. She also won a Shogi tournament despite not really knowing how to play the game. Though her poker-face helped, she claims that the secret to her success is the luck she was born with. She was renowned for managing to rob any who challenged her of all their money and she gained the title "Queen of Liars". She kept earning money for her main goal in life - to live out the rest of her days in luxury in a big fancy European castle with handsome man servants from all around the world dressed as vampires.
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Kirumi:

Ultimate Maid

While working a part-time job as a maid, Kirumi is able to carry out any job, and has created a reputation for doing perfect work. In several occasions, she could sense her friends thoughts and offered them personal services such as bringing food to Mikan's room, suggesting new dance ideas to Hiyoko, and helping Korekiyo to record his observations. She is also talented at various sports. She takes care of cooking and cleaning for the other members. She once stated that even though she can't perform surgeries, she has a medical experience and she can use the medical supplies in the warehouse.

Once mentioned that the last person she served before joining the gang was an author of light novels who was able to publish a novel per month after taking Kirumi's advice on writing quickly. Before him, Kirumi served a politician as a maid and his mahjong's mentor who managed to become the Prime Minister in a country with a peculiar system to decide everything using mahjong.

One of the biggest case she had ever experienced was when she served an owner of a conglomerate who got his daughter was kidnapped by criminals. Using his daughter, the criminal organization asked for a ransom equaling the state budget. Wishing to avoid giving money to the criminals, Kirumi set foot to the criminals' main base herself and was able to neutralize the enemy forces one by one. Eventually, Kirumi persuaded the criminal to start a business who later accepted her proposal and together with the Ultimate Maid he is now maintaining a butler industry.

Being a very talented maid, Kirumi doesn't want to be called as a perfect maid machine as she claimed that she is also an inexperienced high schooler. She also mentioned that there was a time where she was unable support people without potentials. She worked as a businessman's faithful maid and accompany him to his success, to the point he got the nickname of the "Hero of our Era". However, his dependency on Kirumi proved to be his weakness as he couldn't do anything by himself without her on his side. Her principles of Selfless Devotion stems from this experience. Her other weakness is the fact that she can't cut konjac.
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Tsumugi:

Ultimate Cosplayer

Despite her status as the Ultimate Cosplayer, Tsumugi actually doesn't have interest in cosplaying herself. Rather, she states that she enjoys recreating costumes more. She loves to create costumes because it is like making a fictional character real, in a way. She also has a sponsorship that makes her can create costumes with expensive materials.

She is also a well-versed otaku in anime and manga references. In her promotional artwork, Tsumugi is featured with mannequins wearing lingerie and a wig, several paints and cosmetic brushes, as well as red thread and an object which could be interpreted as scissors. This could imply that her talent is multi-faceted.

Tsumugi once stated that she gets "Cospox" an allergic reaction where a bumpy rash spreads across her entire body if she cosplays as anyone that is real. She is capable of matching their appearances, voices, and mannerisms perfectly, making her imitations even more accurate.
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Mikan:

Ultimate Nurse

Because there was no one to take care of her wounds, Mikan learned to take care of herself from a very young age. As she became more and more skilled in this area, she took an interest in nursing, realizing that it gave her a feeling of control over sick and injured people - as weaker people would have to depend on her completely, and their lives would be in her hands. Her skills in this field eventually continued to grow and she seemed to have developed almost all the necessary skills and abilities required of a nurse such as being able to give first-aid, creating various medicine/drugs, being capable of performing surgery, critical analysis of her patients condition in a moments notice and adaptability in dealing with medical emergencies.

As the Ultimate Nurse, Mikan's medical knowledge proves to be useful in murders. She provides autopsy reports, including information on the corpse's state, details on injuries, the cause of death, and time of death. Furthermore, she sometimes gives (often unwanted) health advice to others. She also appears to be more confident while she is nursing.

As talented as she is, Mikan's abilities as a nurse have limits; she doubted she could keep Hiyoko alive to the injuries she sustained during a heist.
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Peko:

Ultimate Swordswoman

Being trained by an unknown clan since she was a newborn, Peko is quite skilled with a blade. She is entrusted with the safety of the clans' successor, proving her skills were greatly trusted by their family. Peko's skills rivaled that of Mukuro. She was able to block all of Mukuro's attacks in quick succession with her shinai. Despite her skills with her katana, Peko could also use her shinai as a non offensive weapon and even knew how to use the handle as a stepping stool to reach high places. Peko can always find a way to get out of a tight situation using her talent as the Ultimate Swordswoman.

When fighting a member of another gang, Peko found herself on the defensive. She hid behind a water tower, and let her opponent destroy it. She then emerged from the geyser of water and struck him down non-lethally before he could have enough time to counter.
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Hiyoko:

Ultimate Traditional Dancer

Hiyoko enrolled in Hope's Peak Academy as the Ultimate Traditional Dancer. She is the heiress of the Saionji Clan who is famous for its traditional Japanese dancing. As a promising young member of the world of traditional Japanese dance, she performs often, even abroad despite being so young. She is popular among young and men audiences, which is rare in Japanese dance industry. Crowds of audience members are drawn to her un-high school student-like appearance and cute voice. However, she stated that most people who aren't used to watching traditional dance performances often fall asleep easily.
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Ibuki:

Ultimate Musician

Before attending Hope's Peak Academy, Ibuki joined a Light Music Club where one of her songs became charted as one of the highest-grossing singles in the country. Later on she quit club for creative difference in which she was scouted by a talent scout, but she refused to play traditional pop music and play heavy metal genre instead. It is stated that she can even play bass and drums on her guitar simultaneously. She is also a skilled song writer, writing her own single repertoire and even her hit single. Whenever someone listens to her genre she played for the first time, they might get shocked and/or even knock unconscious due to its sheer pain when played matching her eccentric and upbeat personality.
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Mahiru:

Ultimate Photographer

From a young age, Mahiru was inspired to become a photographer just like her mother who was a famous war photographer. Despite being young, she won numerous photographer awards and became famous for her skill at taking pictures of people.

Even though she is specialized in any photography category, Mahiru's most favorite picture object is taking pictures of smiling people. She could take a perfect shot of someone's smiles and according to Hajime, he never saw someone smile so bright and heartwarming until he saw Mahiru's photos. Despite that, she always shows her dislike towards boys as she doesn't take many pictures of them.

She started to like taking shots of people's smiles since she was a kid. Her mother always shows the pictures of smiling people to Mahiru, which she liked so much and made her eager to take pictures the same as her mother's wonderful shot.

Compared to her mother's work theme, Mahiru's theme is too conventional and many people don't really care to judge it and expected her to take different objects, as they believe that she could produce amazing results.

Mahiru's dream is to visit different countries to take many pictures of people smiling from different backgrounds.

In any kind of situation, Mahiru doesn't mind to keep snapping photos. She believes that photos depict everything, whether it's beautiful or horrible and it's the duty of a photographer to keep taking photos.
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Sonia:

Ultimate Princess

From the day she was born, Sonia destined to become the princess of the Kingdom of Novoselic. In order to become a true dignified princess, she must learn much knowledge such as leadership, foreign languages, economics, international law, and diagnostic medicine. Among the other gang members, Sonia lives a totally different life from her classmates. She claims that she already accepted her destiny as a princess whose life belongs to her country and its people and if she was to die, it would be for no other reason than the sake of her country and people. She hopes that her death would be a meaningful death to her country and people.

Living in a Kingdom that has a very unique law, culture, and tradition, Sonia has grown interested in studying different countries and languages. It was revealed before she was scouted by the Hope's Peak Academy Sonia can speak, read, and write thirty different languages.

Sonia follows every tradition in Novoselic. However, she denied a tradition to consume an animal species named Skong. The people of Novoselic consume Skong so they could be recognized as an adult. Sonia thinks that it is nice to retain purebred Skongs as a symbol of high status, but consuming them to their highest bidder could endanger the species. She planned to harness the energy that Skong and Makango released using the old tradition so she and her generation don't need to completely end the tradition. Sonia is eager to accomplish her plan and guides her people on the right path.

Sonia has grown interested in Freemasonry, which is forbidden for a princess like her. However, her interest is only at its academic and she is quite sad that no one could relate to her feelings. She believes that expanding her knowledge is the duty of every member of the royal family, and thus, making her interested in the occult, cults, and popular dramas.

Sonia states that in her own country, she is a princess before a person; therefore always prioritized her people and country than herself. Sometimes, she disliked that fact and looking forward to enrolling in Hope's Peak Academy as a regular student.
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Akane:

Ultimate Gymnast

Akane was born with a natural talent as a gymnast. Her body build, strength, agility, and endurance grew ever since she was a child. She often nimbly performed parkour on her home and her father who noticed this convinced her to join tournaments and competitions. It turned out that she did very, very well and kept winning many tournaments since then. Her only motivation to join tournaments was to produce money to provide for her family's everyday needs.

At first, she wasn't motivated to do sports until her former coach trained her every day until she got enough money and moved to a new house.
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Y/N:

Ultimate Lumberjack

Y/N was raised by her grandma and grandpa, who gave her her fluffy hat. Her Grandpa taught her things about being a lumberjack at the age of 10. At the age of 12, he started teaching Y/N how to chop down trees. When he died, Y/N still chopped down trees despite being young and she had no one to teach her as her grandma knew nothing about being a lumberjack.

Being a lumberjack means you need strength, and Y/N's got that. She can easily chop trees down, move things easily, pick up things easily and knock people out with 2 hits! Though she is not skilled in hand-to-hand combat, but she is skilled in using her axe as a weapon.
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